Thor Martin Johnson (June 10, 1913 – January 16, 1975) was an American conductor. He was born in Wisconsin Rapids, Wisconsin. He studied at the University of North Carolina at Chapel Hill, where he was president of the Alpha Rho chapter of Phi Mu Alpha Sinfonia fraternity. He was the first recipient of the fraternity's national Charles E. Lutton Man of Music Award in 1952. He was an initiate of the Alpha Xi chapter of Pi Kappa Alpha fraternity. In 1953-54, Johnson made a series of early stereophonic recordings, primarily with the Cincinnati Symphony Orchestra, for Remington Records.