Thomas Grady Martin (January 17, 1929 – December 3, 2001) was an American session guitarist in country music and rockabilly.

A member of The Nashville A-Team, he played guitar on hits such as Marty Robbins' "El Paso", Loretta Lynn's "Coal Miner's Daughter" and Sammi Smith's "Help Me Make It Through the Night". During a nearly 50-year career, Martin backed such names as Hank Williams, Elvis Presley, Buddy Holly, Johnny Burnette, Don Woody and Arlo Guthrie, Johnny Cash, Patsy Cline and Bing Crosby. He is a member of the Rockabilly Hall of Fame and was elected to the Country Music Hall of Fame in March 2015.