Ira Thomson Carrithers (October 25, 1886 – February 17, 1955) was an American football and basketball coach. He served as the head football coach at Alma College (1908–1909), Knox College in Galesburg, Illinois (1910–1912), and Lake Forest College (1914), compiling a career college football record of 22–17. Carrither was also the head basketball coach at Knox (1910–1913), Lake Forest (1914–1915, 1929–1932), and Coe College (1915–1924), amassing a career college basketball mark of 91–118.