Mario Lopez, Jr. (born October 10, 1973) is an American actor of Mexican descent who has appeared on several television series, in films and on Broadway. He is best-known for his portrayal of the character Albert Clifford A.C. Slater on Saved By The Bell from 1989-1994.

He has appeared in numerous projects since including the 2006-2007 season of Dancing with the Stars and as a celebrity guest host for the syndicated entertainment news magazine show Extra.

Lopez was born in San Diego, the son of Elvia, a telephone clerk, and Mario Lopez Sr., who worked for the municipality of National City. Lopez was a high school wrestler, and graduated from Chula Vista High School in 1992. Lopez' parents are from Culiacán, Sinaloa, Mexico.