Jack Webb
Joe Friday

Ben Alexander
Frank Smith

Olan Soule

Vic Perrin

Jack Kruschen

Art Balinger
Capt. Glavas / Capt. Barnard

Harry Bartell
Frank Salazar

Art Gilmore
/ Capt. Harry Didion

Herb Vigran
/ Pete Eigen / Eugene Murray / Jocko Harris / Sam Phillips

Virginia Gregg
(voice) / Viola Palmer / Audrey Thompson / Marjorie Lewis / Mrs. Doris Roth / Mi...

Natalie Masters
Edith Barson / / Doris Lanpher / Jean Dunbar / Katy Stokes / Peggy Herman

Paul Richards

Sam Edwards

Helen Kleeb

Martin Milner
/ Stephen Banner

Don C. Harvey
/ Capt. Donahoe

William Boyett
/ Stanley Bushing (as Bill Boyett) / Larry Thompson (as Bill Boyett)

Harlan Warde

Howard Culver

Dennis Moore