The 1974 United States Senate election in Indiana took place on November 5, 1974. Incumbent Democratic U.S. Senator Birch Bayh was re-elected to a third consecutive term in office, defeating Mayor of Indianapolis Richard Lugar.

1974 United States Senate election in Indiana

← 1968 November 5, 1974 1980 →

Nominee Birch Bayh Richard Lugar Party Democratic Republican Popular vote 889,269 814,117 Percentage 50.73% 46.44%

County results Bayh:      40-50%      50–60%      60–70% Lugar:      40–50%      50–60%      60-70%

U.S. senator before election Birch Bayh Democratic Elected U.S. Senator Birch Bayh Democratic

Lugar would later win the state's other Senate seat in 1976 and would serve alongside Bayh until the latter's defeat in 1980. He would also serve alongside Birch's son Evan from 1999 from 2011.