Paul Dinello is an American actor, comedian, writer, and director. He is an alumnus of the Chicago-based Second City, Improv Institute, and Annoyance Theatres.

He is best known as Geoffrey Jellineck on Comedy Central's Strangers with Candy. Other television credits include various characters on Comedy Central’s The Colbert Report and Comedy Central’s Exit 57.

Film credits include Gym Teacher: The Movie, Be Kind Rewind, Strangers with Candy, When, Plump Fiction, and Straight Talk.