• AIM Math Teachers' Circle (the original Teachers' Circle)
• Bay Area Circle for Teachers
• Brazos Valley Math Teachers' Circle (Texas A&M)
• Central Iowa Middle School Math Teachers' Circle
• Charlotte Teachers' Circle
• Lincoln Area Teacher's Mathematics Circle
• Pikes Peak Math Teacher Circle (Colorado Springs)
• Riverbend Community Math Center Teacher Circle
• Tucson Teachers' Circle
• Utah Teachers' Math Circle
• Washington University (St. Louis) Science Outreach

A star on this map denotes an existing Math Teachers' Circle; a dot denotes a circle in the making.