Our main site is currently experiencing performance issues  For tickets, call the box office at 312-929-2401

Until we are back up up to full speed,  you can find basic information regarding our Shows, Classes, and Corporate workshop inquiries on this site.


Chicago's Best Improv Comedy



Click for show and ticket information!


The Improvised Shakespeare Co.

A two-act fully improvised play in Elizabethan style using the language and themes of William Shakespeare.


Inspiring Generations of America's Brightest Comedians Entertainers Since 1981!


Whirled News Tonight

The new is real. Everything else is improved.


“This is the most important group work since they built the pyramids” – Bill Murray

Considered to be the Mecca of improvisation, the iO Theater boasts an Improv Training Center that has helped train and develop the talents of an entire generation of America’s best and brightest comedic entertainers for over 30 years. Want more? Our Writing Program and battery of electives will help you develop whatever comedy skills you need!



Electives & Workshops


View All Classes

Training America’s Best Comedic Entertainers for over 30 years

Widely considered to be the premier venue for long-form improvisational performances and classes, the iO Theater (formerly known as the ImprovOlympic Theater) was founded in 1981 by Charna Halpern and the late great improvisational teacher and director, Del Close.

Chicago’s Neighborhood Comedy Spot

The iO Theater is the home of long-form improvisation and Chicago’s Best Improv Comedy.

Located in Chicago’s Lincoln Park Neighborhood, the iO Theater features 4 theaters (with shows 7 nights a week), 2 bars, a kitchen, beer garden, and Event space with over 33,000 square feet of space.

Daily Drink Specials! Students view shows for free!

When it comes to comedy, we’re all business

Do you want entertainment for your conference, meeting or celebration? Let iO put together a hilarious improv show to bring down the house or have us write customized material to make light of issues related to your company or business field. If you can dream it up, we can handle it. If you can’t, then we’ll take care of that too.

Our writers have gone on to work at such shows as Saturday Night Live, The Daily Show, The Colbert Report, Late Night with Conan O’Brien, 30 Rock and MADtv, and countless other shows. So rest assured knowing you’re in good hands.