Improvisational Theatre
- College of William and Mary improv troupe includes at their Web site a FAQ, show calendar, and information about past and current members.
- http://www.wm.edu/so/improv/

Slap Happy
- Toronto four-person long-form ensemble comprised of Second City and Theatresports cast members and alums.
- http://pages.interlog.com/~davepis/slaphome.htm

The Improverts
- Edinburgh group performs late night shows. Includes player photo gallery, crew, and gigs.
- http://www.improverts.chrisfleming.org

Polywumpus
- Philadelphia improv ensemble includes show descriptions, performance schedules, and info on improv workshops.
- http://www.poptopix.com/polywumpus/

Guerilla Improv
- Worcester Polytechnic Institute's improv comedy troupe. Site contains show information, bios and multimedia clips.
- http://users.wpi.edu/~improv/

Improv-Abilities
- Kansas City group with an all-ages show. Site contains upcoming show dates and contact information.
- http://kcimprov.com

Impromedy
- Miami group performs a variety of show formats. Includes cast list, group history, gallery and reservations information.
- http://www.impromedymiami.com

World Class Indifference
- New York/Connecticut short-form team does public performances and corporate team building events. Site includes cast bios, schedule.
- http://www.worldclassindifference.com

The Crew
- Melbourne-based improvisational comedy group. Site contains contact information, show times, player profiles.
- http://www.thecrew.com.au

Crumbs
- Trio from Winnipeg, Manitoba, Canada performs stage and radio shows. Site includes cast biographies, audio clips and photo gallery.
- http://www.crumbs.ca

Big City Improv
- Comedy Improv Troupe performs late-night comedy in the union Square District of San Francisco
- http://www.bigcityimprov.com/

National Comedy Theatre - New York
- Nationally acclaimed improv comedy group based in New York City. Clean, corporate entertainment, weekly performances, team building, college shows and improv workshops.
- http://www.manhattancomedy.com/

Barren Mind Improv
- Arizona State University improv group featuring members of the Farce Side sketch comedy group that performs a late night show every Thursday night.
- http://www.asucomedy.com/

Comedy Court
- Seattle-based fast-paced show set in the genre of a courtroom. Site has a show schedule, cast bios, photos and a group history.
- http://www.comedycourtimprov.com/

Scatterbrains
- Olympia, WA based shortform group performs around Western Washington. Show schedule, cast bios and booking information.
- http://www.scatterbrains.net/

Twisted Flicks
- Seattle group performs an all-new soundtrack for an old B-movie using audience suggestions.
- http://www.twistedflicks.com

NorthWest goga Theatre
- All-female longform group using the goga format originated in New York. Includes bios, performance schedule and workshop schedule.
- http://nwgt.wonderworks.com/

Off The Top
- Carnegie Mellon long-form troupe whose Web site features detailed information about improv warm-ups and staging scenes.
- http://www.andrew.cmu.edu/user/ott/

Laughing Gas Comedy Improv Theatre
- Miami troupe performs late night shows every Friday and Saturday night and offers introductory classes for non-actors.
- http://www.laughinggasimprov.com/

Rare Bird Show
- Philadelphia longform group. Includes bios, photos, shows, and reviews.
- http://www.rarebirdshow.com

National Comedy Theatre of Austin
- Austin, Texas branch. Includes information about reservations, workshops, defensive driving, and corporate training.
- http://comedy7.com/

Creative Urges
- San Diego based troupe. Includes performance schedule, photo album, and workshops.
- http://www.creativeurges.com

Stevie Ray's Improv Company
- Providing cabaret, instruction and corporate services, base in Minneapolis, Minnesota. Schedule, services and contact information included.
- http://www.stevierays.org/

JoKyR and Jesster
- Salt Lake City, Utah duo. Includes bios, video, schedule, and reviews.
- http://www.jokyrandjesster.com/

Wild West Express
- Southern California based troupe. Features national tour schedule, press releases, cast member photos, and booking information.
- http://www.wildwestexpress.net/

Kitsch In Sync
- Boston, MA, shortform improv troupe. Site contains show, history and audition information.
- http://kitschinsync.org

Improv Shmimprov
- Orange County, CA, based shortform improvisation troupe. Site contains cast bios, show information and photos.
- http://www.improvshmimprov.com

Tilt: Ann Arbor's Improv Comedy Group
- Ann Arbor, MI, shortform improv troupe. Site contains show and class info, cast bios, and promotional information.
- http://www.tiltimprov.com

Bad Dog Theatre Company
- Toronto based troupe, includes contact information, schedule, workshops and cast profiles.
- http://www.baddogtheatre.com

Jet City Improv
- Seattle shortform improv troupe offers all-ages shows and classes. Site contains schedule, player bios, reviews and ticket information.
- http://www.jetcityimprov.com

Titanic Players, The
- Northwestern University long-form improvisational comedy group.
- http://onegroupmind.com/thetitanicplayers/

BassProv
- Fully improvised, one-act comedy created by veteran Chicago improvisers Joe Bill and Mark Sutton.
- http://www.bassprov.com/

Neutrino Nation
- New York, NY longform team spawned from Upright Citizens Brigade Theatre. Troupe performs Neutrino Harold shows and Neutrino Video Project improvised movies.
- http://www.neutrinonation.com/

Not the Imposters!
- Shortform improv troupe performs at the Spaghetti Warehouses in Toledo and Columbus Ohio.
- http://www.random-acts.net/nottheimposters.html

The Comedy Clinic - Tulsa's Comedy Troupe
- Tulsa, OK troupe performs shortform improv and original sketch comedy. Site contains show and ticket information.
- http://www.thecomedyclinic.com

The REALLY Spontaneous Theatre Company
- Los Angeles, CA shortform improv group performs improvised comedy and music, based upon suggestions from the audience. Site contains reviews, bios and show dates.
- http://www.rstcimprov.com

SPROUT ideas
- London based improvisers. Experienced teachers, directors and performers. Site contains performance schedule, business services, and information about classes offered.
- http://www.sproutideas.co.uk

Too Many Larrys!
- San Francisco improv troupe performs free shows every Saturday night.
- http://www.toomanylarrys.com/

The Shaun Cassidy Fan Club
- SUNY Oswego improv group that performs every Saturday night during the academic year. They also have a descriptive index of the games they perform.
- http://www.oswego.edu/shaun/

Unscrewed Comedy Troupe
- Based in Tucson, Arizona. Pictures, cast information, booking and contact details.
- http://www.unscrewedcomedy.com/

Nuts and Bolts
- Based in Rochester, New York providing history, photo gallery, reviews, show details and contact information.
- http://www.nutsandboltsimprov.com

New Kevin
- Based in Tucson, Arizona providing troupe history, cast, schedule, contact information and email sign up.
- http://www.newkevin.com/

Mikes of Chicago
- Troupe specializing in open mic improv. Includes cast, history, show details, pictures and contact information.
- http://www.mikesofchicago.org

Kundalini Komedy
- Touring troupe based in New York City. Includes press releases, history and cast information.
- http://kundalinikomedy.com/

Just The Funny
- Miami, Florida company featuring improvisations based on audience suggestions. Show details, cast biographies and contact information included.
- http://www.justthefunny.com/

Eight is Never Enough
- Troupe from New York City. Includes show descriptions, cast, pictures, booking and contact information.
- http://www.eightimprov.biz

Monkey's Uncle
- Denver improv troupe has a show schedule and excerpts torn from the pages of the cast member's journals.
- http://www.monkeysuncle.info/

Full Frontal Nudity
- Troupe from Columbus Ohio providing cast backgrounds, upcoming events, history, classes, pictures and contact information.
- http://www.horsecoproductions.com/ffn2/ffn/

The Have Nots!
- Charleston based troupe performing along the East coast; includes member biographies, schedule of appearances, and a movie.
- http://www.thehavenots.com/

No Parking Players
- Based at Carnegie Mellon University in Pennsylvania, USA. Includes meeting schedule, photos, hall of fame, and resources.
- http://www.andrew.cmu.edu/~sns/npp/

Impulse Theater
- Denver's long-running improv show.
- http://www.impulsetheater.com/

Zip Zap Zop
- Kosice, Slovakia, improv group that performs in English.
- http://improv.host.sk

Ultimate Improv
- Westwood, CA, ensemble comprised with performers from various other troupes in the greater Los Angeles area.
- http://www.ultimateimprov.com/

True Fiction Magazine
- San Francisco long-form improv troupe with a swank Web site.
- http://www.truefictionmagazine.com/

The Spolin Players Northwest
- Seattle company that performs games by the Mother of Improvisation, Viola Spolin. Her past students include Edie McClurg and Dan Castellaneta.
- http://www.spolin.com/players.html

ScripTease Improv and Sketch Comedy
- Santa Cruz, California company that takes off one piece of clothing every time they mess up. Cast profiles, reviews, and photo gallery provided.
- http://www.scripteaseimprov.com/

The Really Spontaneous Theatre Company
- Burbank ensemble that specializes in improvised one-act plays.
- http://www.appliedsilliness.com/rstc/really_co.html

Preston & Volpe
- Los Angeles comedy duo with a speciality in children's shows.
- http://www.prestonandvolpe.com/

Chicago Improv Anarchy
- Chicago-based improv comedy troupe. They know where your mom lives.
- http://www.chicagoimprovanarchy.com

ComedyWorx
- Raleigh, NC, show where a referee mediates two teams of comedians who are competing for the biggest laughs by performing scenes based on audience suggestions.
- http://www.comedyworx.com

Pan Theater Oakland Improv Theater Troupe
- Oakland, CA improv troupe offering shows and classes for the Bay Area.
- http://www.pantheater.com

Oui Be Negroes
- Los Angeles- and San Francisco-based African American improv and sketch comedy troupe.
- http://www.ouibenegroes.com/

Scared Scriptless
- Southend-on-Sea, Essex, ensemble group in search of a new performance space. They perform short form-oriented shows with props.
- http://www.scaredscriptless.co.uk

Impromaniacs Theatre Company
- Victoria, BC, long-running ensemble with group info, photos, and a brief history of improv.
- http://www.impromaniacs.ca/

Blacktop Circus Improv Troupe
- Atlanta African-American troupe that performs every Tuesday at the Uptown Comedy Corner.
- http://www.ijmc.com/blacktop

English Lovers
- Vienna-based improv group with an international cast clad in black.
- http://www.english-lovers.at

North Beach Improv
- San Francisco-based improv ensemble.
- http://www.northbeachimprov.com/

The Liquid Radio Players
- Los Angeles ensemble that performs an improv show with an old-time radio theme.
- http://www.liquidradioplayers.com/

The Improbable Improvisational Ensemble
- Grass Valley, CA, troupe that performs regularly at the Holbrooke Hotel.
- http://www.mikemaginot.com/improv.htm

the fibbs
- San Francisco genetically-engineered ensemble, featuring performers from Bay Area Theatresports, perform random acts of silliness on a regular basis.
- http://www.thefibbs.com/

East Bay Improv
- Albany, CA, troupe and improv school with a monthly gig at Cafe Eclectica.
- http://www.eastbayimprov.com/

Commedus Interruptus
- University of Southern California improv group with an excellent cast bio page and info about their shows and organization.
- http://www-scf.usc.edu/~commedus/

Blue Blanket Improv
- San Francisco troupe that performs free shows in various outdoor locations throughout the city.
- http://www.blueblanketimprov.com/

The Tenderloins Improv Troupe
- New York City-based, Del Close-trained long-form improv troupe that performs the Harold and the Armando Diaz. Their Web site includes a promotional film, as wel as clips from their movies.
- http://www.thetenderloins.com/

goga
- New York City-based all-female long-form improv troupe with an eye to spreading goga-energy all over the world.
- http://www.e-goga.com/

The Collective
- Minneapolis long-form ensemble features a detailed history and writings by the troupe members at their Web site.
- http://www.collectiveimprov.com/

Dirty South Improv
- Improv group with short and longform improv shows in North Carolina and Chicago, as well as two national touring shows. Includes training center and show info.
- http://www.dirtysouthimprov.com/

Raleigh's Village Idiots
- Raleigh, NC, ensemble that has regular performance on Friday nights.
- http://www.idiots.net/

The Oxymorons
- San Antonio improv troupe with shows on Friday and Sunday nights.
- http://www.oxymoronsimprov.com/

Mixed Signals Web World
- College of New Jersey-based ensemble that performs shows both on- and off-campus.
- http://www.tcnj.edu/~mixed

Mile Hi-Larity
- Denver ensemble performs the first and third Tuesdays of the month, as well as holds corporate workshops.
- http://www.milehilarity.com/

Laughing Matters
- Atlanta improv troupe does public performances and private bookings and workshops using such formats as murder mysteries and game shows to team-build and foster creativity.
- http://www.laughingmatters.com/

Improvoholics
- New York City mainstays strive to create new games and tweak old ones to amuse and entertain the audience.
- http://www.improvoholics.com/

The Brody Theater
- Portland, OR, theater that houses the long-form show Double Play and hosts area groups.
- http://www.brodytheater.com/

Bovine Metropolis Theater
- Denver comedy theater that hosts "Improv Hootenanny" and "On the Spot." They also offer adult and teen improv workshops, and performance opportunities for high school and college troupes.
- http://www.bovinemetropolis.com/

Amnesia Wars
- New York City group dedicated to stretching the possibilities of long-form improv in such shows as "Psycheroticproviholicyesandsomethingvoodoo."
- http://www.amnesiawars.com/

The Groundlings
- Legendary Los Angeles improv company that launched the careers of such performers as Phil Hartman, Lisa Kudrow, Jon Lovitz, and Edie McClurg.
- http://www.groundlings.com/

The Improv Bandits
- Aukland, New Zealand, company that performs original shows and Keith Johnstone formats both at home and abroad.
- http://www.improvbandits.co.nz/

Sirens
- Chicago all-female troupe whose show "Chicken Scratch" uses each performers own monologues as starting points for improvised scenes.
- http://www.sirensimprov.com/