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OUR ANNUAL POPULAR IMPROV INTENSIVE IS BACK!

AN INCREDIBLY FUN, EDUCATIONAL, AND LIFE-CHANGING EXPERIENCE!

CLICK HERE FOR MORE INFO AND TO REGISTER TODAY!

IMPROV, WRITING, SKETCH & MORE!

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REGISTER FOR A CLASS TODAY!

CHICAGO’S BEST IMPROV COMEDY

THE BIRTHPLACE OF LONGFORM IMPROV & HOME TO SOME OF THE BEST IMPROV COMEDY SHOWS IN THE COUNTRY!

See our full calendar of Shows

INSPIRING GENERATIONS OF AMERICA’S BRIGHTEST COMEDIC ENTERTAINERS SINCE 1981!

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WHIRLED NEWS TONIGHT

THE NEWS IS REAL. EVERYTHING ELSE IS IMPROVISED.

SATURDAYS AT 8PM - Read more & buy tickets!

IMPROVISED SHAKESPEARE CHICAGO

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

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PERFORMED 7 NIGHTS A WEEK

See all of our Harold teams

Playing at iO:

Playing Tonight & Upcoming Shows

The Harold Team Meridian, The Harold Team Macbeth

The Harold Team Meridian

The Harold Team Macbeth

Thu 4/25

8:00 pm

Chicago, IL

More Info

Improvised Shakespeare Chicago

Improvised Shakespeare Chicago

Thu 4/25

8:00 pm

Chicago, IL

More Info

Dynasty, Yaz Bat, Last Call, & J.D. Venom!

Dynasty, Yaz Bat, Last Call, & J.D. Venom!

Thu 4/25

8:00 pm

Chicago, IL

More Info

SmallProv

SmallProv

Thu 4/25

8:00 pm

Chicago, IL

More Info

The Scene, The Harold Team Cecilia

The Scene

The Harold Team Cecilia

Thu 4/25

10:00 pm

Chicago, IL

More Info

Girl Gang

Girl Gang

Thu 4/25

10:00 pm

Chicago, IL

More Info

Wet Bus, The Harold Team St. Gen's

Wet Bus

The Harold Team St. Gen's

Thu 4/25

10:00 pm

Chicago, IL

More Info

Tru Bangerz / Bag of Bones

Tru Bangerz / Bag of Bones

Thu 4/25

10:30 pm

Chicago, IL

More Info

Molly: One Night Only!

Molly: One Night Only!

Thu 4/25

10:30 pm

Chicago, IL

More Info

Stephen Does Magic

Stephen Does Magic

Fri 4/26

7:30 pm

Chicago, IL

More Info

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“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!

  • YOUTH & TEEN PROGRAM

  • IMPROV TO SKETCH

  • IMPROV

  • INTENSIVES

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    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 Favorite 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.

    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.