TESL Ontario has twelve affiliates throughout the province that host such events as workshops, conferences, swap shops, publishers' displays and expert panel discussions from September through June. In this way, the particular needs of a region can be addressed, but also shared with other TESL affiliates.
TESL members participate in professional development through their local affiliates as well as through attending the annual conference.
| Affiliate | Affiliate Representative | Email Address |
|---|---|---|
| TESL Durham | Rodney Cooper | rcoopc561@rogers.com |
| TESL Hamilton-Wentworth | Rick Born | richard.born@hwdsb.on.ca |
| TESL Kingston | Robyn German | rsg_1014@yahoo.ca |
| TESL London | Jo-elle Rinker | jrinker@ymcawo.ca |
| TESL Niagara | Jim Papple | jpapple@brocku.ca |
| TESL North York/York Region | Linda Cooper | lindajcooper1@bell.net |
| TESL Northern Region | vacant | |
| TESL Ottawa | Maria Barczyk | maria.barczyk@gmail.com |
| TESL Peel/Halton/Etobicoke | Maria Ivanova | mivanova@dixiebloor.org |
| TESL Toronto | Karen Thomson | klthomson@yahoo.com |
| TESL Waterloo-Wellington | Ron Champion | rchampion@uwaterloo.ca |
| TESL Windsor | Veronica Cusenza | vnal@hotmail.com |