Jonathan Williams (born November 30, 1983) is a Belizean athlete specializing in the 110 metres hurdles and 400 metres hurdles. He represented Belize at the 2008 Summer Olympics in Beijing, competing in the 400m hurdles. He did not advance from his heat.
Williams also represented Belize at several other international competitions, including the IAAF World Championships in Athletics. He holds national records for Belize in both the 110m and 400m hurdles events. Prior to representing Belize, he competed for Great Britain. He has also competed in the Commonwealth Games.
Williams attended the University of California, Los Angeles (UCLA), where he was a member of the track and field team.