United States House of Representatives elections, 1966 Louisiana Louisiana

| District | Incumbent | Party | First_elected | Result_ | Candidates |
|---|---|---|---|---|---|
| Louisiana 1 | F. Edward Hebert | Democratic | 1940 | Re-elected | F. Edward Hebert (D) Unopposed |
| Louisiana 2 | Hale Boggs | Democratic | 1946 | Re-elected | Hale Boggs (D) 68.6% Leonard L. Limes (R) 31.4% |
| Louisiana 3 | Edwin E. Willis | Democratic | 1948 | Re-elected | Edwin E. Willis (D) 59.7% Hall M. Lyons (R) 40.3% |
| Louisiana 4 | Joe Waggonner | Democratic | 1961 | Re-elected | Joe Waggonner (D) Unopposed |
| Louisiana 5 | Otto Passman | Democratic | 1946 | Re-elected | Otto Passman (D) Unopposed |
| Louisiana 6 | James H. Morrison | Democratic | 1942 | Lost renomination Democratic hold | John Rarick (D) 76.6% Crayton G. Hall (R) 23.4% |
| Louisiana 7 | Edwin Edwards | Democratic | 1965 | Re-elected | Edwin Edwards (D) Unopposed |