A podium with the OHTN logo on it stands before a curtain, chair, and table in dramatic red lighting.


1300 Yonge Street, Suite 600
Toronto, Ontario M4T 1X3

Tel: 416-642-6486
Toll Free: 1-877-743-6486
Fax: 416-640-4245

The OHTN operates on the traditional lands of the Huron-Wendat, the Seneca, the Petun, and the Mississaugas of the New Credit First Nation, and we acknowledge the Métis and Inuit relatives as well. This meeting place has been the home to many Indigenous people for thousands of years and we are grateful to have the opportunity to work on this land.

View staff directory

Main contacts

General information: info@ohtn.on.ca
Scientific and Executive Director: ed@ohtn.on.ca
Grant, award and scholarship information: funding@ohtn.on.ca
Questions related to HIV research: research_questions@ohtn.on.ca
Questions related to the OHTN Cohort Study: ocsinfo@ohtn.on.ca
Knowledge translation and exchange: kte@ohtn.on.ca
Research conference information: conference@ohtn.on.ca
Privacy concerns: kcheung@ohtn.on.ca

Rapid Response service

If you are a community-based HIV/AIDS organization in Ontario and would like to request a Rapid Response on an HIV-related topic, please contact rapidresponse@ohtn.on.ca.

Assistance for ASOs

For questions related to OCHART contact ochart@ohtn.on.ca.
For questions related to OCASE contact ocase@ohtn.on.ca.

Media requests

Members of the press can use our media request form to reach out for comments and interviews on issues related to HIV and the OHTN.

Mailing lists

Take a look at all of the OHTN mailing lists and sign up for updates on education, research, epidemiology, and more.

Getting here

The closest intersection is Yonge and Woodlawn, about four blocks south of St. Clair and Yonge. The closest subway stops are Summerhill and St. Clair on the Yonge line. Public parking is available at 21 Pleasant Blvd., two blocks north of the OHTN.