Chicago's home of longform improv. Founded in 1981 as ImprovOlympic by Charna Halpern and the legendary Del Close, iO Theater pioneered The Harold and has trained generations of America's greatest comedic talent — alumni include Tina Fey, Amy Poehler, Stephen Colbert, and Chris Farley. Its four-stage complex at 1501 N Kingsbury St hosts improv, sketch, and standup most nights of the week, with a full bar and kitchen open on show nights. All ages welcome.
Loose Four
Open mic6:00 PMWed, Aug 19
House Party
9:30 PMSat, Aug 22$15 – $30
Loose Four
Open mic6:00 PMWed, Aug 26
Reverse Therapy
9:30 PMFri, Aug 28$15 – $30
House Party
9:30 PMSat, Aug 29$15 – $30
Loose Four
Open mic6:00 PMWed, Sep 2
Digital Footprint
7:30 PMThu, Sep 3$20 – $35
The Fest Vol 2
6:00 PMFri, Sep 4$5
People Being Funny
9:30 PMFri, Sep 4$15 – $30
Loose Four
Open mic6:00 PMWed, Sep 9
Extremely Laugh and Incredibly Jokes
9:30 PMFri, Sep 11$15 – $30
Loose Four
Open mic6:00 PMWed, Sep 16
Loose Four
Open mic6:00 PMWed, Sep 23
Reverse Therapy
9:30 PMFri, Sep 25$15 – $30
Loose Four
Open mic6:00 PMWed, Sep 30
People Being Funny
9:30 PMFri, Oct 2$15 – $30
Loose Four
Open mic6:00 PMWed, Oct 7
Extremely Laugh and Incredibly Jokes
9:30 PMFri, Oct 9$15 – $30
Loose Four
Open mic6:00 PMWed, Oct 14
Reverse Therapy
9:30 PMFri, Oct 16$15 – $30
Loose Four
Open mic6:00 PMWed, Oct 21
Loose Four
Open mic6:00 PMWed, Oct 28
Loose Four
Open mic6:00 PMWed, Nov 4
People Being Funny
9:30 PMFri, Nov 6$15 – $30
Loose Four
Open mic6:00 PMWed, Nov 11
Extremely Laugh and Incredibly Jokes
9:30 PMFri, Nov 13$15 – $30
Loose Four
Open mic6:00 PMWed, Nov 18
Loose Four
Open mic6:00 PMWed, Nov 25
Reverse Therapy
9:30 PMFri, Nov 27$15 – $30
Loose Four
Open mic6:00 PMWed, Dec 2
People Being Funny
9:30 PMFri, Dec 4$15 – $30
Loose Four
Open mic6:00 PMWed, Dec 9
Extremely Laugh and Incredibly Jokes
9:30 PMFri, Dec 11$15 – $30
Loose Four
Open mic6:00 PMWed, Dec 16
Loose Four
Open mic6:00 PMWed, Dec 23
Reverse Therapy
9:30 PMFri, Dec 25$15 – $30
Loose Four
Open mic6:00 PMWed, Dec 30
People Being Funny
9:30 PMFri, Jan 1$15 – $30
Loose Four
Open mic6:00 PMWed, Jan 6
Extremely Laugh and Incredibly Jokes
9:30 PMFri, Jan 8$15 – $30
Loose Four
Open mic6:00 PMWed, Jan 13
Loose Four
Open mic6:00 PMWed, Jan 20
Loose Four
Open mic6:00 PMWed, Jan 27
Reverse Therapy
9:30 PMFri, Jan 29$15 – $30
Loose Four
Open mic6:00 PMWed, Feb 3
People Being Funny
9:30 PMFri, Feb 5$15 – $30
Loose Four
Open mic6:00 PMWed, Feb 10
Extremely Laugh and Incredibly Jokes
9:30 PMFri, Feb 12$15 – $30
Loose Four
Open mic6:00 PMWed, Feb 17
None of the comedians you follow are on the lineup here right now.
Check the venue's website2026
17House Party
9:30 PMSat, Aug 15$15 – $30
Extremely Laugh and Incredibly Jokes
9:30 PMFri, Aug 14$15 – $30
Loose Four
Open mic6:00 PMWed, Aug 12
iO Showcase
4:00 PMTue, Aug 11$15 – $30
House Party
9:30 PMSat, Aug 8$15 – $30
Windy City Comedy Festival Presents
8:30 PMSat, Aug 8$20 – $35
People Being Funny
9:30 PMFri, Aug 7$15 – $30
Loose Four
Open mic6:00 PMWed, Aug 5
House Party
9:30 PMSat, Aug 1$15 – $30
Loose Four
Open mic6:00 PMWed, Jul 29
Parker Callahan: Shock Jock
9:30 PMFri, Jul 24$20 – $40
Loose Four
Open mic6:00 PMWed, Jul 22
House Party
9:30 PMSat, Jul 18
Reverse Therapy
9:30 PMFri, Jul 17
Loose Four
Open mic6:00 PMWed, Jul 15
House Party
9:30 PMSat, Jul 11
Loose Four
Open mic6:00 PMWed, Jul 8
Every comedian who's been on a lineup at iO Theater.
- Sam Rossi53.9K
- Kieron Harrell51.9K
- AJ Leidig39.2K
- Carter Dockerty21.1K
- Parker Callahan12.2K
- Steven Baer10.2K
- Stephanie Robertson8.7K
- Zoe Dodson8.5K
- Jacy Tate5.3K
- Georgia Moore4K
- Elsie How3.6K
- Gabriel Alvizo3.2K
- Nate Nagvajara2.9K
- EEthan Heck2.8K
- Lauren Frost2.7K
- Chris Davis2.6K
- Tiera Hollanquest1.9K
- Annaliese Baker1.8K
- Geoff Dow1.7K
- Tim Felton1.6K
- Maureen Nolan1.4K
- Dylan Doetch1.1K
- Jack Layden1.1K
- CChris Davis
- DDelilah Orizaba
- KKennon McKinney
- MMark Krikorian
- TTyler Malec