Allen Stephen Covert (born October 12, 1964) is an American comedian, actor, writer, and producer. He is best known for his starring role in the 2006 comedy film Grandma's Boy, and his supporting actor role in the movie Strange Wilderness (2008). He is a frequent collaborator of actor and friend Adam Sandler with prominent roles in such films as Happy Gilmore (1996), The Wedding Singer (1998), Big Daddy (1999), Little Nicky (2000), Mr. Deeds (2002), Anger Management (2003), 50 First Dates (2004) and I Now Pronounce You Chuck and Larry (2007).

Life
Covert was born in West Palm Beach, Florida, the son of Elizabeth Ann (née Duhy) and Stephen Covert. His father was Jewish, and his mother was a Southern Baptist. He studied theater at New York University, where he was a classmate of Adam Sandler. Covert has served as a performer, writer, and/or producer for almost every film and comedy album Sandler has ever released.

He married Kathryn Ashley Hagstrom on February 14, 2006. In July 2019, Hagstrom filed for divorce; it was finalized in November 2019.