Brad Thomas Kilby (born February 19, 1983)[1] is a left-handed former Major League Baseball pitcher.

Kilby was selected by the Athletics in the twenty ninth round of the 2005 Major League Baseball Draft.

Kilby began his minor league career in 2005 with the Vancouver Canadians, pitching 1.95 ERA in 23 games.

In 2008, he played for the Sacramento River Cats, pitching 3.47 ERA with seven wins and two losses in 51 games.

[4] Kilby made his major league debut on September 2, 2009, against the Kansas City Royals.