ConArtists
- Auckland wide program training teachers, leaders, and students in the competitive improv format.
- http://www.theatresports.co.nz

Take A Bow Productions
- Training for all ages in Chatham, Ontario. Includes list of games, photo gallery, course descriptions and pricing.
- http://www.takeabowproductions.com

Hal Peller
- Teaching teens, actors, non-actors, and corporate since 1981 in New York City.
- http://www.improvworkshop.com

Ed Reggi
- Offers Spolin Theatre Games primarily in Missouri to children, adults, and special seniors only classes.
- http://www.edreggi.com/classes.html

QT! Improv
- New York City drop-in workshops taught by John Swist.
- http://quickthinkingimprov.com/

Ventura Area TheatreSports
- Southern California drop-in adult workshops. No registration required.
- http://www.liverytheatre.org/workshops.html

Screaming Frog Productions
- Offers adult training heavily influenced by the works of Viola Spolin, and Keith Johnstone. Based in Los Angeles, California.
- http://www.screamingfrog.com/classes.html

Keith Johnstone
- Courses taught by the Calgary, Alberta based founder of Theatresports, Micetro Impro, Gorilla Theatre, and The Life Game.
- http://www.keithjohnstone.com/

East Bay Improv
- Albany, California based school featuring an online schedule of adult training workshops.
- http://www.eastbayimprov.com/

Comedy Dojo
- Los Angeles based Chris Barnes teaches various forms such as games, scenes, and long form.
- http://www.comedydojo.com/

Wisconsin Theater Game Center
- Door County, Wisconsin improv school teaches based on the work of Viola Spolin.
- http://www.paulsills.com/

Spolin Center
- Seattle, Washington based workshops from one of the mothers of improv comedy.
- http://www.spolin.com/workshops.html

Second City
- Offers training to children and adults at all experience levels in Chicago, Detroit, Las Vegas, Los Angeles, New York, and Toronto.
- http://www.secondcity.com/training-education/

National Comedy Theatre San Jose
- Offers workshops for adults, children, and teens in the heart of Silicon Valley. Online schedules and registration.
- http://www.national-comedy.com/classes.html

National Comedy Theatre Los Angeles
- Professional, amateur, high school, and teen training. Offers online schedule and registration.
- http://www.comedysportzla.com/classes.htm

Heroes School of Improv
- Austin, Texas affiliate of Theatresports teaching classes at all levels.
- http://heroescomedy.com/classes/class_home.html

ComedySportz Chicago
- Offers a 4 level adult workshop series culminating in audtions for the live performance troupe.
- http://www.comedysportzchicago.com/site/epage/11432_245.htm

BATS Improv School
- Offers both short and long form classes in the San Francisco Bay Area. Complete schedule, instructor bios, and online registration.
- http://www.improv.org/school/

Bad Dog Theatre Company
- Provides workshops and training in the Toronto, Canada area. Online schedule and workshop FAQ.
- http://www.baddogtheatre.com/modules/wfsection/index.php?category=3

Loose Moose Theatre Company
- Two week intensive workshop bringing together improvisers from around the globe.
- http://www.loosemoose.com/school.htm

Improvisation for the Spirit Workshop
- A workshop for anyone seeking to nourish their creativity through comedy improv games, theatre, yoga and fun.
- http://www.improvforthespirit.com/

Learn Improv
- Offers descriptions, instructions and tips on games and exercises, as well as information for putting on a show.
- http://www.learnimprov.com/

bang
- Hollywood improv performance space and teaching facility.
- http://www.bangstudio.com/

The Invisible Bus
- Houston theater that specializes in classes for kids and adults. Includes .pdf files, class profiles and schedule.
- http://www.invisiblebus.com