| 485BXT                                                                                                                | File Nos. 333-185866                                                                                           |
|-----------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------|
| Allianz Index Advantage (delay amendment)                                                                             | 811-05618                                                                                                      |
|                                                                                                                  | Class ID: C000124821                                                                                           |
|                                                                                                                  | UNITED STATES                                                                                                  |   |
|                                                                                                                  | SECURITIES AND EXCHANGE COMMISSION                                                                             |   |
|                                                                                                                  | WASHINGTON, D.C. 20549                                                                                         |   |
|                                                                                                                  | FORM N-4                                                                                                       |   |
|                                                                                                                  |                                                                                                           |   |
| REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933                                                               |                                                                                                           |
| Pre-Effective Amendment No.                                                                                           |                                                                                                           |   |   |
| Post-Effective Amendment No.                                                                                          | 6                                                                                                              |   | X |
| and/or                                                                                                                |                                                                                                           |
| REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940                                                       |                                                                                                           |
| Amendment No.                                                                                                         | 422                                                                                                            |   | X |
|                                                                                                                  |
| (Check appropriate box or boxes.)                                                                                     |
| ALLIANZ LIFE VARIABLE ACCOUNT B                                                                                       |
| (Exact Name of Registrant)                                                                                            |
|                                                                                                                  |
| ALLIANZ LIFE INSURANCE COMPANY OF NORTH AMERICA                                                                       |
| (Name of Depositor)                                                                                                   |
|                                                                                                                  |
| 5701 Golden Hills Drive, Minneapolis, MN 55416-1297                                                                   |
| (Address of Depositor's Principal Executive Offices) (Zip Code)                                                       |
|                                                                                                                  |
| (763) 765-2913                                                                                                        |
| (Depositor's Telephone Number, including Area Code)                                                                   |
|                                                                                                                  |
| Stewart D. Gregg, Senior Securities Counsel                                                                           |
| Allianz Life Insurance Company of North America                                                                       |
| 5701 Golden Hills Drive                                                                                               |
| Minneapolis, MN 55416-1297                                                                                            |
| (Name and Address of Agent for Service)                                                                               |
|                                                                                                                  |
| It is proposed that this filing will become effective (check the appropriate box):                                    |
|                                                                                                                  | immediately upon filing pursuant to paragraph (b) of Rule 485                                                  |
| x                                                                                                                     | On March 6, 2015 pursuant to paragraph (b) of Rule 485                                                         |
|                                                                                                                  | 60 days after filing pursuant to paragraph (a)(1) of Rule 485                                                  |
|                                                                                                                  | on (date) pursuant to paragraph (a)(1) of Rule 485                                                             |
| If appropriate, check the following:                                                                                  |
| x                                                                                                                     | this post-effective amendment designates a new effective date for a previously filed post-effective amendment. |
| Approximate Date of the Proposed Public Offering: May 1, 2015                                                         |
| Titles of Securities Being Registered: Individual Flexible Purchase Payment Variable Deferred Annuity Contracts  |

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| Signature             | Title                                                       |
|-----------------------|-------------------------------------------------------------|
|                  |                                                        |
| Walter R. White*      | Director, President & Chief Executive Officer           |
| Giulio Terzariol*     | Director, Senior Vice President and Chief Financial Officer |
| Marna C. Whittington* | Director                                                    |
| Ronald M. Clark**     | Director                                                    |
| David L. Conway**     | Director                                                    |

| * | By Power of Attorney incorporated by reference as exhibit EX-99.B13.a. from Registrant's initial filing on Form N-4 (File Nos. 333-185866 and 811-05618), electronically filed on January 3, 2013. |
|---|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| ** | By Power of Attorney incorporated by reference as exhibit EX-99.B13.a. from Registrant’s Post-Effective Amendment No. 1 on Form N-4 (File Nos. 333-185866 and 811-05618), electronically filed on January 10, 2014. |
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