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.
Top performers
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
Maggie Winters & Friends
7:00 PMThu, Nov 5$30 – $45
Loose Four
Open mic6:00 PMWed, Nov 11
People Being Funny
9:30 PMFri, Nov 13$15 – $30
One Liner Madness
8:00 PMSat, Nov 14$22 – $37
House Party
9:30 PMSat, Nov 14$15 – $30
Loose Four
Open mic6:00 PMWed, Nov 18
House Party
9:30 PMSat, Nov 21$15 – $30
Loose Four
Open mic6:00 PMWed, Nov 25
Reverse Therapy
9:30 PMFri, Nov 27$15 – $30
House Party
9:30 PMSat, Nov 28$15 – $30
Loose Four
Open mic6:00 PMWed, Dec 2
People Being Funny
9:30 PMFri, Dec 4$15 – $30
House Party
9:30 PMSat, Dec 5$15 – $30
Loose Four
Open mic6:00 PMWed, Dec 9
House Party
9:30 PMSat, Dec 12$15 – $30
Loose Four
Open mic6:00 PMWed, Dec 16
House Party
9:30 PMSat, Dec 19$15 – $30
Loose Four
Open mic6:00 PMWed, Dec 23
Loose Four
Open mic6:00 PMWed, Dec 30
Loose Four
Open mic6:00 PMWed, Jan 6
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
Loose Four
Open mic6:00 PMWed, Feb 17
Loose Four
Open mic6:00 PMWed, Feb 24
Reverse Therapy
9:30 PMFri, Feb 26$15 – $30
Loose Four
Open mic6:00 PMWed, Mar 3
People Being Funny
9:30 PMFri, Mar 5$15 – $30
Loose Four
Open mic6:00 PMWed, Mar 10
Loose Four
Open mic6:00 PMWed, Mar 17
Loose Four
Open mic6:00 PMWed, Mar 24
Reverse Therapy
9:30 PMFri, Mar 26$15 – $30
Loose Four
Open mic6:00 PMWed, Mar 31
People Being Funny
9:30 PMFri, Apr 2$15 – $30
Loose Four
Open mic6:00 PMWed, Apr 7
None of the comedians you follow are on the lineup here right now.
Check the venue's website2026
36Loose Four
Open mic6:00 PMWed, Oct 7
People Being Funny
9:30 PMFri, Oct 2$15 – $30
Loose Four
Open mic6:00 PMWed, Sep 30
Reverse Therapy
9:30 PMFri, Sep 25$15 – $30
Loose Four
Open mic6:00 PMWed, Sep 23
House Party
9:30 PMSat, Sep 19$15 – $30
Loose Four
Open mic6:00 PMWed, Sep 16
House Party
9:30 PMSat, Sep 12$15 – $30
Loose Four
Open mic6:00 PMWed, Sep 9
House Party
9:30 PMSat, Sep 5$15 – $30
People Being Funny
9:30 PMFri, Sep 4$15 – $30
The Fest Vol 2
6:00 PMFri, Sep 4$5
Digital Footprint
7:30 PMThu, Sep 3$20 – $35
Loose Four
Open mic6:00 PMWed, Sep 2
Cocktail Comedy
9:30 PMSat, Aug 29$15 – $45
Reverse Therapy
9:30 PMFri, Aug 28$15 – $30
Loose Four
Open mic6:00 PMWed, Aug 26
House Party
9:30 PMSat, Aug 22$15 – $30
Loose Four
Open mic6:00 PMWed, Aug 19
House 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.
- Kieron Harrell63.6K
- Sam Rossi58.2K
- Maggie Winters54.6K
- Claire Sundbye51.4K
- AJ Leidig43.7K
- Keith Hernandez32.2K
- Katie Novotny28.1K
- Carter Dockerty21.7K
- Mantra20.5K
- Hannah Belmont13.1K
- Parker Callahan12.2K
- Steven Baer10.2K
- Stephanie Robertson9.4K
- Zoe Dodson8.7K
- Cameron Cai5.9K
- Jacy Tate5.3K
- Evelyn Troutman4.6K
- Georgia Moore4.2K
- Prim Stonebraker3.7K
- Chris Calogero3.6K
- Elsie How3.6K
- Natalie Whalen3.5K
- Natalia Sovero3.2K
- Gabriel Alvizo3.2K
- Annie Russell3.1K
- Mitchell Potts3.1K
- Dan Bublitz Jr3K
- Nate Nagvajara2.9K
- Ethan Heck2.9K
- Forrest Wheeler2.8K
- Syed Hasnain2.8K
- Lauren Frost2.7K
- Chris Davis2.6K
- Brian Miklas2.6K
- Joe Medoff2.6K
- Erick Austin2.2K
- Zach Harley2.2K
- Tiera Hollanquest2K
- Preston O’ffill2K
- Nick Mayer2K
- Ray Roberts1.9K
- Vivian Burgett1.9K
- Annaliese Baker1.8K
- Lindy Tongol1.8K
- Tim Felton1.8K
- Geoff Dow1.7K
- Ffae lily1.7K
- Richard Bowen1.7K
- Tiel Pierce1.6K
- Keaton Ford1.6K
- Eli Wilz1.6K
- Maureen Nolan1.5K
- Carly Schirber1.4K
- Kaylan Adams1.4K
- Kenzie Mackin1.4K
- Joli Yang1.4K
- Mike Mazzella1.4K
- Brandon Judd1.4K
- Denise Medina1.3K
- Jason Issac1.3K
- Orly K.G.1.2K
- Robert Rule1.2K
- Jack Layden1.2K
- Steven McCaskey1.1K
- Calle Hack1.1K
- Dylan Doetch1.1K
- Max Tidey994
- Mike Dwyer962
- James River848
- Tim Piotrkowski787
- Connor O’Hara748
- Heath Thornton632
- Zach Schneider592
- Tom Walma496
- Mike Glab482
- Grey Dolan466
- Evan Pratt449
- Sara Smola219
- Giancarlo Pascuzzi136
- Devin Flaherty118
- AAlice Dihon
- BBradley Ray Rose
- CCam Honeyager
- CChris Starman
- CCody Ciminillo
- CColin Jesse
- DDelilah Orizaba
- EElim Almedom
- FFee Basanavicius
- GGemini The Savage
- GGunvit Bhatia
- JJamie Hawkins
- JJosh Fred
- KKennon McKinney
- MMark Krikorian
- RRyan Hallam
- TTyler Malec
- WWill Morris