You can reach the Ontario Nurses’ Association in several ways.

Please contact your Bargaining Unit President if you have queries about your contract or questions about your working conditions. You can use ONA’s email tool to send a message to your President.

If you need to contact a member of our Board of Directors, please visit our Board of Directors page and access the contact information of each Board member.

Provincial Office

85 Grenville Street, Suite 400 (linked to map)
Toronto ON, M5S 3A2
Phone: 416-964-8833
Toll-free phone: 1-800-387-5580
Fax: 416-964-8864 Toll-free fax: 1-866-964-8864

Regional Offices

If your call/fax is local to the regional office, you should use the local dialing option where possible.

Kingston Office
4 Cataraqui Street, Suite 201 (linked to map)
Kingston, ON K7K 1Z7
Phone: 613-545-1110
Night Line: 613-545-1366
Fax: 613-531-9043
Toll-free fax: 1-866-931-9043

Hamilton Office
55 Head Street, Suite 306 (linked to map)
Dundas, ON L9H 3H8
Phone: 905-628-0850
Fax: 905-628-2557
Toll-free fax: 1-866-928-3496

London Office
1069 Wellington Road South
Suite 109
London, ON  N6E 2H6
Phone: 519 438-2153
Fax: 519-433-2050
Toll-free fax: 1-866-933-2050

Orillia Office
210 Memorial Avenue, Unit 126A (linked to map)
Orillia, ON L3V 7V1
Phone: 705-327-0404
Fax: 705-327-0511
Toll-free fax: 1-866-927-0511

Ottawa Office
1400 Clyde Avenue, Suite 211 (linked to map)
Nepean, ON K2G 3J2
Phone: 613-226-3733
Fax: 613-723-0947
Toll-free fax: 1-866-523-0947

Sudbury Office
40 Larch Street, Suite 203
Sudbury, ON  P3E 5M7
Phone: 705-560-2610
Fax: 705-560-1411
Toll-free fax: 1-866-460-1411

Thunder Bay Office
Woodgate Office Centre (linked to map)
1139 Alloy Drive, Suite 200
Thunder Bay, ON P7B 6M8
Phone: 807-344-9115
Fax: 807-344-8850
Toll-free fax: 1-866-744-8850

Timmins Office
Canadian Mental Health Association Building (linked to map)
330 Second Avenue, Suite 203
Timmins, ON P4N 8A4
Phone: 705-264-2294
Fax: 705-268-4355
Toll-free fax: 1-866-568-4355

Windsor Office
3155 Howard Avenue, Suite 220 (linked to map)
Windsor, ON N8X 3Y9
Phone: 519-966-6350
Fax: 519-972-0814
Toll-free fax: 1-866-972-0814


General queries should be directed to Please include your full name, Union ID number if available and the name of your employer.

For website queries, please email ONA’s web coordinator at

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