|        |
|--------|
|        |  |  |
|   | þ | ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |

|        |
|--------|
|        |  |  |
|   | ¨ | TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |

----

|                                  |
|----------------------------------|
|                                  |  |
| Items 1-3.                       | The information required by Items 1-3 is not required. See Item 4 below. |
|                             |   |
| Item 4.                          | The Cincinnati Financial Corporation Tax-Qualified Savings Plan is subject to the requirements of ERISA. In lieu of the requirements of Items 1-3 above, the Plan Financial Statements and Schedule prepared in accordance with the Financial Reporting requirements of ERISA are attached hereto and incorporated herein by reference. |
|                             |   |
| Financial Statements and Exhibit |
|                             |   |
| 23.1                             | Consent of Independent Registered Public Accounting Firm |
|                             |   |
|                             | Financial statements as of and for the years ended December 31, 2014 and 2013, and supplemental schedule as of December 31, 2014. |

|                                |
|--------------------------------|
|                                |  |  |
|                           |   | Cincinnati Financial Corporation |
|                           |   | Tax-Qualified Savings Plan |
|                           |   | (Name of Plan) |
|                           |   |   |
| DATE:  June 24, 2015 |   | /S/ Michael J. Sewell |
|                           |   | Michael J. Sewell, CPA |
|                           |   | Chief Financial Officer, Senior Vice President, Treasurer and Employee Benefits Committee Chairman |

----

----

|                                                             |
|-------------------------------------------------------------|
|                                                             |  |  |
|                                                        |   | Page |
|                                                        |   |   |
| Report of Independent Registered Public Accounting Firm     | 1 |
|                                                        |   |
| Financial Statements and Notes to the Financial Statements: |   |
|                                                        |   |
|                                                        | Statements of Net Assets Available for Benefits as of December 31, 2014 and 2013 | 2 |
|                                                        |   |   |
|                                                        | Statements of Changes in Net Assets Available for Benefits for the Years Ended      December 31, 2014 and 2013 | 3 |
|                                                        |   |   |
|                                                        | Notes to Financial Statements as of and for the Years Ended December 31, 2014 and 2013 | 4 |
|                                                        |   |   |
| Supplemental Schedule:                                      | 9 |
|                                                        |   |
|                                                        | Form 5500, Schedule H, Part IV, Line 4i — Schedule of Assets (Held at End of Year) as of December 31, 2014 | 10 |

|       |
|-------|
|       |  |
| NOTE: | All other schedules required by Section 2520.103-10 of the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974 have been omitted because they are not applicable. |

----

----

|                                                                               |
|-------------------------------------------------------------------------------|
|                                                                               |  |  |  |  |  |  |  |  |
| CINCINNATI FINANCIAL CORPORATION                                              |   |   |   |   |
| TAX-QUALIFIED SAVINGS PLAN                                                    |   |   |   |   |
|                                                                          |   |   |   |   |
| STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS |   |   |   |   |
|                                                                          |   | December 31, |   | December 31, |
|                                                                          |   | 2014 |   | 2013 |
| Assets:                                                                       |   |   |  |   |   |  |
| Participant-directed investments (at fair value)                              |   | $ | 361,666,038 |  |   | $ | 317,641,979 |  |
| Notes receivable from participants                                            |   | 4,854,814 |  |   | 3,985,736 |  |
| Accrued interest and dividends receivable                                     |   | 201,575 |  |   | 188,063 |  |
| Net assets available for benefits                                             |   | $ | 366,722,427 |  |   | $ | 321,815,778 |  |
|                                                                          |   |   |   |   |
| Accompanying notes are an integral part of these financial statements.        |   |   |  |   |   |  |

----

|                                                                        |
|------------------------------------------------------------------------|
|                                                                        |  |  |  |  |  |  |  |  |
| CINCINNATI FINANCIAL CORPORATION                                       |   |   |   |   |
| TAX-QUALIFIED SAVINGS PLAN                                             |   |   |   |   |
|                                                                   |   |   |   |   |
| STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS             |   |   |
|                                                                   |   | Years ended December 31, |
|                                                                   |   | 2014 |   | 2013 |
| Additions:                                                             |   |   |  |   |   |  |
| Participant contributions (including rollovers of $2,277,627           |   |   |  |   |   |  |
| and $2,306,140 in 2014 and 2013, respectively)                         |   | $ | 24,675,897 |  |   | $ | 22,415,579 |  |
| Employer contributions                                                 |   | 11,165,311 |  |   | 9,714,721 |  |
| Total contributions                                                    |   | 35,841,208 |  |   | 32,130,300 |  |
|                                                                   |   |   |  |   |   |  |
| Net appreciation in fair value of investments                          |   | 1,156,043 |  |   | 53,396,294 |  |
| Interest and dividend income                                           |   | 19,140,581 |  |   | 8,767,534 |  |
| Total investment income                                                |   | 20,296,624 |  |   | 62,163,828 |  |
| Interest income on notes receivable from participants                  |   | 180,535 |  |   | 153,087 |  |
| Total additions                                                        |   | 56,318,367 |  |   | 94,447,215 |  |
|                                                                   |   |   |   |   |
| Deductions:                                                            |   |   |   |   |
|      Benefits paid to participants and other  |   | 11,338,322 |  |   | 9,751,782 |  |
| Administrative expenses                                                |   | 73,396 |  |   | 54,662 |  |
| Total deductions                                                       |   | 11,411,718 |  |   | 9,806,444 |  |
|                                                                   |   |   |   |   |
| Increase in net assets                                                 |   | 44,906,649 |  |   | 84,640,771 |  |
| Net assets available for benefits:                                     |   |   |  |   |   |  |
| Beginning of year                                                      |   | 321,815,778 |  |   | 237,175,007 |  |
| End of year                                                            |   | $ | 366,722,427 |  |   | $ | 321,815,778 |  |
|                                                                   |   |   |   |   |
| Accompanying notes are an integral part of these financial statements. |   |   |  |   |   |  |

----

|                                                 |
|-------------------------------------------------|
|                                                 |  |  |  |  |
| NOTES TO FINANCIAL STATEMENTS AS OF AND FOR THE |
| YEARS ENDED DECEMBER 31, 2014 AND 2013     |

----

----

|        |
|--------|
|        |  |  |  |  |  |  |  |  |  |  |
|   |   |   |   | At December 31, |
|   |   | 2014 |   | 2013 |
|   |   | Dodge & Cox Stock Fund |   | $ | 38,307,185 |  |   | $ | 33,265,120 |  |
|   |   | T. Rowe Price Growth Stock Fund |   | 33,188,347 |  |   | 30,655,010 |  |
| *      |   | Cincinnati Financial Stock Fund |   | 23,746,296 |  |   | 23,451,273 |  |
|   |   | Dodge & Cox International Stock Fund |   | 21,395,694 |  |   | 18,385,490 |  |
|   |   |   |   |   |   |   |

|                                       |
|---------------------------------------|
|                                       |  |  |  |  |  |  |  |  |
|                                  |   | Years ended December 31, |
|                                  |   | 2014 |   | 2013 |
| Registered investment companies:      |   |   |  |   |   |  |
| Large cap funds                       |   | $ | 3,573,088 |  |   | $ | 22,273,454 |  |
| Mid cap funds                         |   | 622,264 |  |   | 6,093,844 |  |
| Small cap funds                       |   | (3,790,378 | ) |   | 8,177,179 |  |
| Balanced funds                        |   | 1,562,381 |  |   | 5,931,911 |  |
| International funds                   |   | (809,927 | ) |   | 5,826,177 |  |
| Bond funds                            |   | 434,589 |  |   | (1,031,072 | ) |
| Total registered investment companies |   | 1,592,017 |  |   | 47,271,493 |  |
| Self-directed brokerage account       |   | (283,741 | ) |   | 18,811 |  |
| Cincinnati Financial Stock Fund       |   | (152,233 | ) |   | 6,105,990 |  |
| Total net appreciation of investments |   | $ | 1,156,043 |  |   | $ | 53,396,294 |  |
|                                  |   |   |   |   |

|         |                                                                                                                                                                                                                                                                                                                      |
|---------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| • | Level 1 – Financial assets and liabilities for which inputs are observable and are obtained from reliable quoted prices for identical assets or liabilities in active markets. This is the most reliable fair value measurement and includes, for example, active exchange-traded equity securities and funds. |

|         |                                                                                                                                                                                                                                                                                                                    |
|---------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| • | Level 2 – Financial assets and liabilities for which fair values are based on quoted prices in markets that are not active or for which values are based on similar assets and liabilities that are actively traded. This also includes pricing models for which the inputs are corroborated by market data. |

|         |                                                                                                                                                                                                                          |
|---------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| • | Level 3 – Financial assets and liabilities for which fair values are based on prices or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement. |

----

|                                             |
|---------------------------------------------|
|                                             |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| At December 31, 2014                        |   | Quoted prices in active markets for identical assets(Level 1) |   | Significantother observableinputs(Level 2) |   | Significant unobservable inputs(Level 3) |   | Total  |
| Registered investment companies:            |   |   |  |   |   |  |   |   |  |   |   |  |
| Large cap funds                             |   | $ | 105,219,255 |  |   | $ | — |  |   | $ | — |  |   | $ | 105,219,255 |  |
| Mid cap funds                               |   | 42,338,646 |  |   | — |  |   | — |  |   | 42,338,646 |  |
| Small cap funds                             |   | 45,011,352 |  |   | — |  |   | — |  |   | 45,011,352 |  |
| Balanced funds                              |   | 65,825,019 |  |   |   |   |   |   | 65,825,019 |  |
| International funds                         |   | 33,773,917 |  |   | — |  |   | — |  |   | 33,773,917 |  |
| Bond funds                                  |   | 28,357,736 |  |   | — |  |   | — |  |   | 28,357,736 |  |
| Total registered investment companies       |   | 320,525,925 |  |   | — |  |   | — |  |   | 320,525,925 |  |
| Self-directed brokerage account:            |   |   |   |   |   |   |   |   |
| Interest bearing cash                       |   | 1,514,327 |  |   | — |  |   | — |  |   | 1,514,327 |  |
| Non-interest bearing cash                   |   | 18,797 |  |   |   |   |   |   | 18,797 |  |
| Common stock                                |   | 1,929,747 |  |   | — |  |   | — |  |   | 1,929,747 |  |
| Mutual funds                                |   | 1,487,252 |  |   | — |  |   | — |  |   | 1,487,252 |  |
| Options                                     |   | 12,958 |  |   | — |  |   | — |  |   | 12,958 |  |
| Total self-directed brokerage accounts      |   | 4,963,081 |  |   | — |  |   | — |  |   | 4,963,081 |  |
| Fidelity Money Market Trust Retirement Fund |   | 12,430,736 |  |   | — |  |   | — |  |   | 12,430,736 |  |
| Cincinnati Financial Stock Fund             |   | 23,746,296 |  |   | — |  |   | — |  |   | 23,746,296 |  |
| Total                                       |   | $ | 361,666,038 |  |   | $ | — |  |   | $ | — |  |   | $ | 361,666,038 |  |
|                                        |   |   |   |   |   |   |   |   |

----

|                                             |
|---------------------------------------------|
|                                             |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| At December 31, 2013                        |   | Quoted prices in active markets for identical assets(Level 1) |   | Significantother observableinputs(Level 2) |   | Significant unobservable inputs(Level 3) |   | Total  |
| Registered investment companies:            |   |   |  |   |   |  |   |   |  |   |   |  |
| Large cap funds                             |   | $ | 91,473,319 |  |   | $ | — |  |   | $ | — |  |   | $ | 91,473,319 |  |
| Mid cap funds                               |   | 35,137,138 |  |   | — |  |   | — |  |   | 35,137,138 |  |
| Small cap funds                             |   | 44,439,074 |  |   | — |  |   | — |  |   | 44,439,074 |  |
| Balanced funds                              |   | 52,487,884 |  |   |   |   |   |   | 52,487,884 |  |
| International funds                         |   | 31,508,148 |  |   | — |  |   | — |  |   | 31,508,148 |  |
| Bond funds                                  |   | 23,738,060 |  |   | — |  |   | — |  |   | 23,738,060 |  |
| Total registered investment companies       |   | 278,783,623 |  |   | — |  |   | — |  |   | 278,783,623 |  |
| Self-directed brokerage account:            |   |   |   |   |   |   |   |   |
| Interest bearing cash                       |   | 380,369 |  |   | — |  |   | — |  |   | 380,369 |  |
| Common stock                                |   | 911,279 |  |   | — |  |   | — |  |   | 911,279 |  |
| Mutual funds                                |   | 377,214 |  |   | — |  |   | — |  |   | 377,214 |  |
| Options                                     |   | 46,875 |  |   | — |  |   | — |  |   | 46,875 |  |
| Total self-directed brokerage accounts      |   | 1,715,737 |  |   | — |  |   | — |  |   | 1,715,737 |  |
| Fidelity Money Market Trust Retirement Fund |   | 13,691,346 |  |   | — |  |   | — |  |   | 13,691,346 |  |
| Cincinnati Financial Stock Fund             |   | 23,451,273 |  |   | — |  |   | — |  |   | 23,451,273 |  |
| Total                                       |   | $ | 317,641,979 |  |   | $ | — |  |   | $ | — |  |   | $ | 317,641,979 |  |
|                                        |   |   |   |   |   |   |   |   |

----

----

|                                           |
|-------------------------------------------|
|                                           |  |  |  |  |  |  |  |
| CINCINNATI FINANCIAL CORPORATION          |   |   |
| TAX-QUALIFIED SAVINGS PLAN                |   |   |   |
|                                      |   |   |   |   |
| FORM 5500, SCHEDULE H, PART IV, LINE 4i-- |   |   |
| SCHEDULE OF ASSETS (HELD AT END OF YEAR)  |   |   |
| December 31, 2014                         |   |   |   |
|                                      | Identity of Issuer | Description of Investment | Shares | Current Value*** |
| *                                         | Fidelity Money Market Trust Retirement Fund | Interest bearing cash | 12,430,736 |  | $ | 12,430,736 |  |
|                                      |   |   |   |   |
| *                                         | Cincinnati Financial Corporation | Common stock | 458,125 |  | 23,744,603 |  |
|                                      | Stock Purchase Account |   |   | 1,693 |  |
|                                      | Total Cincinnati Financial Stock Fund |   |   | $ | 23,746,296 |  |
|                                      |   |   |   |   |
|                                      | Dodge & Cox Stock Fund | Registered investment company | 211,712 |  | $ | 38,307,185 |  |
|                                      | T. Rowe Price Growth Stock | Registered investment company | 638,852 |  | 33,188,347 |  |
|                                      | Dodge & Cox International Stock | Registered investment company | 508,091 |  | 21,395,694 |  |
|                                      | Prudential Jennison Mid Cap Growth Z | Registered investment company | 429,086 |  | 17,176,302 |  |
| *                                         | Fidelity Total Bond | Registered investment company | 1,607,107 |  | 17,163,900 |  |
|                                      | Vanguard Mid Cap Index I | Registered investment company | 436,385 |  | 14,745,461 |  |
| *                                         | Fidelity Spartan 500 Index | Registered investment company | 172,544 |  | 12,569,851 |  |
|                                      | Artisan International Investor | Registered investment company | 413,158 |  | 12,378,223 |  |
|                                      | T. Rowe Price New Horizons | Registered investment company | 279,510 |  | 12,236,947 |  |
|                                      | Royce Premier Investment | Registered investment company | 611,848 |  | 12,065,645 |  |
|                                      | AllianzGI NFJ Small Cap Value Institutional | Registered investment company | 411,912 |  | 11,455,263 |  |
|                                      | Goldman Sachs Mid Cap Value Institutional | Registered investment company | 250,526 |  | 10,416,883 |  |
| *                                         | Fidelity Contrafund K | Registered investment company | 100,258 |  | 9,815,220 |  |
|                                      | Vanguard Small Cap Index I | Registered investment company | 165,625 |  | 9,253,497 |  |
|                                      | Vanguard Total Bond Market Index I | Registered investment company | 718,142 |  | 7,806,207 |  |
|                                      | T. Rowe Price Equity Income | Registered investment company | 180,051 |  | 5,905,657 |  |
|                                      | FMI Large Cap | Registered investment company | 256,032 |  | 5,432,995 |  |
|                                      | PIMCO Low Duration Institutional | Registered investment company | 337,413 |  | 3,387,629 |  |
| *                                         | Fidelity Freedom Index 2005 W | Registered investment company | 32,069 |  | 401,182 |  |
| *                                         | Fidelity Freedom Index 2010 W | Registered investment company | 34,488 |  | 453,178 |  |
| *                                         | Fidelity Freedom Index 2015 W | Registered investment company | 291,237 |  | 3,893,844 |  |
| *                                         | Fidelity Freedom Index 2020 W | Registered investment company | 545,262 |  | 7,540,969 |  |
| *                                         | Fidelity Freedom Index 2025 W | Registered investment company | 638,096 |  | 9,246,012 |  |
| *                                         | Fidelity Freedom Index 2030 W | Registered investment company | 662,184 |  | 9,813,573 |  |
| *                                         | Fidelity Freedom Index 2035 W | Registered investment company | 800,393 |  | 12,262,021 |  |
| *                                         | Fidelity Freedom Index 2040 W | Registered investment company | 585,558 |  | 9,023,444 |  |
| *                                         | Fidelity Freedom Index 2045 W | Registered investment company | 520,375 |  | 8,086,632 |  |
| *                                         | Fidelity Freedom Index 2050 W | Registered investment company | 251,179 |  | 3,930,957 |  |
| *                                         | Fidelity Freedom Index 2055 W | Registered investment company | 81,239 |  | 1,009,804 |  |
| *                                         | Fidelity Freedom Index Income W | Registered investment company | 14,346 |  | 163,403 |  |
|                                      | Total registered investment company |   |   | $ | 320,525,925 |  |
|                                      |   |   |   |   |
|                                      |   |   |   |   |

----

|                                           |
|-------------------------------------------|
|                                           |  |  |  |  |  |  |  |
| CINCINNATI FINANCIAL CORPORATION          |   |   |
| TAX-QUALIFIED SAVINGS PLAN                |   |   |   |
|                                      |   |   |   |   |
| FORM 5500, SCHEDULE H, PART IV, LINE 4i-- |   |   |
| SCHEDULE OF ASSETS (HELD AT END OF YEAR)  |   |   |
| December 31, 2014                         |   |   |   |
|                                      | Identity of Issuer | Description of Investment | Shares | Current Value*** |
|                                      | Self-directed brokerage account | Various |   | $ | 4,963,081 |  |
|                                      | Total participant-directed investments |   |   | $ | 361,666,038 |  |
|                                      |   |   |   |   |
| *                                         | Participant loans** |   |   | $ | 4,854,814 |  |
|                                      |   |   |   |   |  |
| *                                         | Party-in-interest |   |   |   |  |
| **                                        | The interest rates on these loans range from 4.25% to 7.50%, with maturity dates through May 2038. |
| ***                                       | Cost information is not required for participant-directed investments and, therefore, is not included. |