
Frank Conniff Jr. (born August 30, 1956) is an American writer, actor, comedian and producer, best known for his portrayal of TV's Frank on Mystery Science Theater 3000 (MST3K). He is the son of journalist and editor Frank Conniff.

Sabrina, the Teenage Witch
TV • 1996

Sabrina, the Teenage Witch
TV • 1996

Mystery Science Theater 3000
TV • 1989

Hidden America with Jonah Ray
TV • 2016

God Bless America
MOVIE • 2012

Make Me Laugh
TV • 1997

Cinematic Titanic
TV • 2007

Cinematic Titanic: Rattlers
MOVIE • 2012

Monty Python's Best Bits Celebrated
MOVIE • 2021

Mystery Science Theater 3000: The RiffTrax Experiments
TV

This Is MST3K
MOVIE • 1992

The Mads are Back
TV • 2020

The Frank
MOVIE • 2014

Margot Rourke & The Boys Club
MOVIE • 2013

Cinematic Titanic: Blood of the Vampires
MOVIE • 2009

Cinematic Titanic: War of the Insects
MOVIE • 2011

RiffTrax Live: Day of the Shorts: SF Sketchfest 2019
MOVIE • 2019

Cinematic Titanic: The Oozing Skull
MOVIE • 2007