Glenn David Williams (born 18 July 1977) is a retired third baseman from Australia, who played in the Minnesota Twins organization.

In 1993, as a 16-year-old, Glenn signed a lucrative free agent contract with the Atlanta Braves for an estimated 1.3 million Australian dollars.

He played baseball for the minor league affiliates of the Atlanta Braves, Toronto Blue Jays, and Minnesota Twins.

On 19 August 2010 Glenn was announced as manager for the Australian Baseball League foundation club Sydney Blue Sox in their inaugural 2010–11 season.

[1] On 9 April 2021, Baseball Australia has announced Glenn as the new chief executive officer after former CEO Cam Vale steps down.