John Barton Miadich (born February 3, 1976) is an American former Major League Baseball (MLB) pitcher who played for the Anaheim Angels in 2001 and 2003.

[1] Miadich attended the University of San Diego, where he played college baseball for the Toreros from 1995-1997.

[3][4] He was drafted by the Colorado Rockies of Major League Baseball (MLB) in 1994, but did not sign a contract with the team.

In 2000, he was signed as a free agent by the Anaheim Angels and spent parts of the 2001 and 2003 seasons with the team before being released.

He subsequently signed contracts with the San Diego Padres, Texas Rangers, Florida Marlins, and Tampa Bay Devil Rays.