Leo Allen is a New York City-based comedian, writer, actor, and filmmaker.

He has performed stand-up comedy on Late Night with Conan O'Brien, Last Call with Carson Daly, NBC's Late Friday's, and this year saw the airing of his own Comedy Central Presents 1/2 hour stand-up special.

For three seasons, he wrote for "Saturday Night Live", contributed to the second season of "Human Giant" on MTV, and was recently the co-head writer on Robert Smigel's live autism benefit – A Night of Too Many Stars for Comedy Central, which raised over three million dollars and featured performances by Steve Carrell, Ben Stiller, and Chris Rock - and was hosted by Jon Stewart.

He has appeared at The HBO US Comedy Arts Festival in Aspen, The Edinburgh Fringe Festival, Bumbershoot, South by Southwest, The Chicago Comedy Festival, San Francisco Sketchfest, and many others.

Additionally, with Eric Slovin – he comprises the comedy team "Slovin & Allen". They performed their own Comedy Central Presents 1/2 hour special, made a pilot for F/X co-starring Eva Longoria, and most recently co-created, co-wrote, and co-executive produced the television show "Important Things with Demetri Martin" which was picked up by Comedy Central for six episodes.

One day he hopes to have health insurance.