Justin Roberts Towles (born February 11, 1984 in Crosby, Texas) is a Major League Baseball catcher for the Houston Astros.
The Oakland Athletics originally drafted him in the 32nd round (968th overall) and in the 23rd round (692nd overall) in the 2002 and 2003 Major League Baseball drafts, respectively. He did not sign with them either times. He signed with the Houston Astros when they drafted him in the 20th round (604th overall) in the 2004 draft.
In 2004 after being signed, Towles played at the rookie level for the Greeneville Astros. He played in just 39 games and batted .243 with no home runs. In 2005 and in 2006, he played for the Single-A Lexington Legends. He batted .345 with 5 home runs in 45 games in 2005 and in 2006, batted .312 with 12 home runs in 81 games. He was a South Atlantic League Mid-Season All-Star in 2006 and was a Baseball America Low A All-Star.