John Pinette was born in Boston, Massachusetts, on March 23, 1964, the son of Robert Pinette Sr. and Louise Pitre (Petrie). His mother was of Acadian ancestry, with her parents both from the Canadian province of New Brunswick. He graduated from Malden Catholic High School in 1982. He was a practicing Catholic. He graduated from the University of Massachusetts Lowell in 1986 with a degree in accounting. He started a six-month career in accounting but, on the advice of friends, left to pursue a career in comedy.

John Pinette was an American actor, Broadway performer, and stand-up comedian. He toured the comedy club circuit beginning in the 1980s and appeared in cinema and on television. Besides stand-up, Pinette did impressions of Michael Jackson, The Chipmunks, Elvis Presley, Gollum from The Lord of the Rings, Hervé Villechaize (Tattoo from Fantasy Island), an Ewok, actor Marlon Brando (notably Brando's role in The Godfather), as well as various ethnic accents. He occasionally sang, for example, "Over the Rainbow" from The Wizard of Oz, "Will You Be There" from Free Willy, and "Don't Cry for Me Argentina," in his stand-up routines.