1966 United States Senate election in Kansas

The 1966 United States Senate election in Kansas took place on November 8, 1966, concurrently with elections to the United States Senate in other states as well as elections to the United States House of Representatives and various state and local elections.

Incumbent Republican U.S. Senator James B. Pearson defeated Democratic nominee James Floyd Breeding with 52.15% of the vote.

Primary elections
Primary elections were held on August 2, 1966.

Candidates

 * James Floyd Breeding, former U.S. Representative for Kansas's 5th congressional district
 * Harold S. Herd, incumbent State Senator
 * K. L. "Ken" Smith, Democratic nominee for U.S. Senate in 1962
 * J. Leigh Warner, insurance executive

Candidates

 * Ava V. Anderson
 * Robert F. Ellsworth, incumbent U.S. Representative for Kansas's 3rd congressional district
 * James B. Pearson, incumbent U.S. Senator
 * William D. Tarrant, former mayor of Wichita

Candidates

 * James B. Pearson (R)
 * James Floyd Breeding (D)
 * George W. Snell (C)
 * Earl F. Dodgel (P), Prohibition nominee for Indiana's 2nd congressional district in 1960