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iO's FIRST COMEDY FEST IS HERE!

Have a team outside the iO theater and want to submit? Do it now!

Click for more info & submit your act 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!

Learn More & Register For a Class today!

WHIRLED NEWS TONIGHT

THE NEWS IS REAL. EVERYTHING ELSE IS IMPROVISED.

SATURDAYS AT 8PM - Read more & buy tickets!

THE IMPROVISED SHAKESPEARE CO.

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

Upcoming Events

Del Close Theater

THE IMPROVISED SHAKESPEARE COMPANY

Fri 5/25

8:00 pm

Chicago, IL

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THE IMPROVISED SHAKESPEARE COMPANY

Fri 5/25

10:30 pm

Chicago, IL

More Info

THE IMPROVISED SHAKESPEARE COMPANY

Sat 5/26

8:00 pm

Chicago, IL

More Info

THE IMPROVISED SHAKESPEARE COMPANY

Sat 5/26

10:30 pm

Chicago, IL

More Info

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Mission Theater

PREACH!

Fri 5/25

8:00 pm

Chicago, IL

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Revolver

The Harold Team Duchess

Fri 5/25

10:30 pm

Chicago, IL

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Whirled News Tonight

Sat 5/26

8:00 pm

Chicago, IL

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Chris Farley Cabaret

1st Beat

Fri 5/25

7:00 pm

Chicago, IL

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The Musical Armando Ft. Daniel Zacapa

Fri 5/25

8:00 pm

Chicago, IL

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CONTENT

Fri 5/25

10:30 pm

Chicago, IL

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Breakfast of Champions

Fri 5/25

11:55 pm

Chicago, IL

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Jason Chin Cabaret

Comedy Dance Collective presents: CDC in 4-D

Fri 5/25

8:00 pm

Chicago, IL

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Oh Hell Yeah

Fri 5/25

10:30 pm

Chicago, IL

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The Deltones

The Harold Team Comet

Sat 5/26

8:00 pm

Chicago, IL

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The Harold Team Big Spoon

The Harold Team State Schramps

Sat 5/26

10:30 pm

Chicago, IL

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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!

  • IMPROV TO SKETCH

  • IMPROV

  • INTENSIVES

  • 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 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.