OPSEU Local 217
- Represents the employees of the Niagara Parks Commission in Niagara Falls.
- http://www.opseu217.com/mambo/

OPSEU Liquor Boards Employees Division
- Represents over 5,000 unionized employees in LCBO retail stores, warehouses and offices as well as at the Duty Free store at the Ambassador Bridge. Merged with OPSEU in June, 2005.
- http://www.opseu.org/lbed/

OPSEU Local 527
- Represents workers at 400 University, 655 Bay St. and 505 University Avenue in Toronto.
- http://www.local527.ca/

OPSEU Local 520
- Represents employees of the Ontario government at downtown Toronto offices.
- http://www.opseu520.org/

OPSEU Local 549
- Represents staff at the Ontario Science Centre.
- http://www.local549.com

OPSEU Local 352
- Union representing academic employees at Sir Sanford Fleming College in Peterborough.
- http://fleming0.flemingc.on.ca/opseu/local352/welcome.htm

OPSEU Local 365
- Represents support staff at Trent University in Peterborough.
- http://www.trentu.ca/opseu/

OPSEU Local 351
- Represents support staff at Sir Sanford Fleming College.
- http://fleming0.flemingc.on.ca/opseu/local351/opseu.htm

OPSEU Local 110
- Provides news and events for the union of Fanshawe College faculty, and information about its organization.
- http://www3.sympatico.ca/local110.opseu/

OPSEU Local 415
- Represents faculty at Alognquin College.
- http://locallines.org/

OPSEU Local 524
- Represents workers at the Ministry of Attorney General, 720 and 724 Bay Street and 18 King Street.
- http://local524.20m.com/

OPSEU Local 232
- Represents public service workers in Guelph.
- http://www.opseu232.org/

OPSEU Pension Trust
- Information about the pension plan for OPSEU's members.
- http://www.optrust.com

OPSEU Region 7
- Provincial public service locals in north western Ontario.
- http://www.opseuregion7.org

OPSEU Region 5
- Covers provincial public service locals in the Toronto area.
- http://www.opseuregion5.org

OPSEU Region 4
- Covers 90 locals in eastern Ontario. Site includes newsletters, minutes, forms, bulletin boards and other resources.
- http://www.opseuregion4.org

OPSEU Local 362
- Latest news, bulletins and photographs from OPSEU Local 362, Peterborough, Ontario, Canada.
- http://www.littlesquares.com/362

OPSEU
- The Ontario Public Service Employees Union represents provincial government employees in Ontario.
- http://www.opseu.org/