| Rep Roster Deadline: |
|
| Preliminary Rosters: | April 28th, or 2 business days prior to the team's first game |
Final Rosters: | June 30th |
| OBA Hall of Fame Nominations: | June 1st |
| R. Jack Middlemass Scholarship Applications: | June 1st |
| Elimination Tournament Entry Application Deadline: | June 15th |
| Insurance Application Deadline: | June 15th |
| Central Registration Compliance Deadline (submission of HL data): | June 15th |
Coach Certification Deadline:
| June 30th |
| Select Roster Deadline: | June 30th |
| Select Membership Application Deadline (Locals): | June 30th |
| Select Membership Application Deadline (Loops): | June 30th |
Select Provincial Tournament Entry Application Deadline:
| June 30th |
| EBLO Participation - Intent to Participate | July 1st |
Rep Provincial Registration Fee:
(typically paid by affiliate on behalf of locals): | July 8th |
| Rep Classification: | July 11th, 2023 |
| Eliminations: |
|
22U Qualifier: | June 30-July 3, 2023 |
22U: | July 14-17, 2023 |
13U, 15U, 18U: | August 3-7, 2023 |
Senior: | August 4-7, 2023 |
| Nationals: |
|
Senior Women: | July 27-30, 2023 |
22U: | August 3-6, 2023 |
Canada Cup: | August 9-13, 2023 |
21U: | August 10-13, 2023 |
18U: | August 17-20, 2023 |
13U, 15U, 16U, Senior Men: | August 24-27, 2023 |
| Select and Rep Provincials: |
|
22U: | August 11-13, 2023 |
18U: | August 18-20, 2023 |
All other divisions: | September 1-4, 2023 |
| EBLO Roster Deadline (2024 Playing Season): | September 13th, 2023 |
Amendments to the Constitutions
(OBA, Rep and Select) | October 25th |
Proposed Rule Changes (Rep and Select) | October 25th |
Nominations to the Board and Councils | October 25th |
Award Nominations | October 25th |
| Annual General Meeting | November 17-19, 2023 |
