Philip Matthew Seibel (born January 28, 1979) is an American former Major League Baseball left-handed pitcher.

Seibel made his major league debut on April 15, 2004, and faced just two batters.

Seibel sat out the entire 2005 season recovering from Tommy John surgery, then rejoined the Red Sox for their 2006 spring training in Florida as a non-roster invitee, he was shipped back to the minors on March 17.

In 2009, Phil and his wife Charity were married in a ceremony in Playa Del Carmen, Mexico.

[2] Since 2009, he left baseball and took a role with his father's insurance agency, becoming president of the company in 2021.