List of members of the United States Congress by longevity of service House and Senate time House and Senate time

| Total_tenure_rank | Uninterrupted_rank | Name_ | Party_affiliation | Total_tenure_time | Uninterrupted_time |
|---|---|---|---|---|---|
| 60 | 51 | Henry Waxman (H) | Democratic Party | 39years, 29days | 39years, 29days |
| 61 | 52 | Morris Sheppard (H,S) | Democratic Party | 38 years, 145 days | 38 years, 145 days |
| 62 | 53 | Ernest Hollings (S) | Democratic Party | 38 years, 55 days | 38 years, 55 days |
| 63 | 54 | Richard Russell, Jr. (S) | Democratic Party | 38 years, 9 days | 38 years, 9 days |
| 64 | 999 | John Sherman (H,S,I) | Republican Party | 38 years, 4 days | n/a |
| 65 | 55 | Russell B. Long (S) | Democratic Party | 38 years, 3 days | 38 years, 3 days |
| 66 | 56 | Frederick H. Gillett (H,S) | Republican Party | 38 years, 0 days | 38 years, 0 days |