List of United States Representatives in the 110th Congress by seniority U.S. House seniority list U.S. House seniority

| Rank_ | Representative | Party | District | Seniority_date | Notes_ |
|---|---|---|---|---|---|
| 1 | John Dingell | D | MI-15 | December 13, 1955 | Dean of the House |
| 2 | John Conyers | D | MI-14 | January 3, 1965 | Chair of the Judiciary Committee , Dean of the Congressional Black Caucus |
| 3 | Dave Obey | D | WI-7 | April 1, 1969 | Chair of the Appropriations Committee |
| 4 | Charles B. Rangel | D | NY-15 | January 3, 1971 | Chair of the Ways and Means Committee |
| 5 | Bill Young | R | FL-10 | January 3, 1971 |  |
| 6 | Ralph Regula | R | OH-16 | January 3, 1973 | Left the House in 2009 |
| 7 | Pete Stark | D | CA-13 | January 3, 1973 |  |