John Michael Lamb (born July 10, 1990) is an American former professional baseball pitcher.

The Kansas City Royals selected Lamb in the fifth round of the 2008 Major League Baseball Draft.

[2] In 2010, Lamb won the Paul Splittorff Award as the best minor league pitcher in the Royals' system.

On July 26, 2015, the Royals traded Lamb to the Cincinnati Reds, along with Brandon Finnegan and Cody Reed, for Johnny Cueto.

[9] Lamb underwent back surgery during the 2015–16 offseason, and began the regular season on the disabled list.

The Tampa Bay Rays acquired Lamb from the Cincinnati Reds on November 2, 2016, in exchange for cash considerations.