Diana Yoon appears on the City of Toronto’s list of certified candidates for Councillor in Ward 11 University-Rosedale. A certified candidate is one whose nomination the City Clerk has accepted. The list shows the nomination date as May 20, 2026 and the campaign website VoteYoon.ca.
Her About page, the campaign’s own statement, calls her an affordable housing expert, climate activist and community leader. It says that from 2017 to 2020 she worked at The Atmospheric Fund and managed a climate grants program of $1.6 million, that she worked at the national co-op housing federation, that she is a board director of the Circle Community LandTrust and a former board member of the Cecil Community Centre, and that she co-founded Climate Justice Toronto. It also says she advocated for the federal $1.5 billion Co-op Housing Development Program. voche.me did not check these roles or that claim with the organizations or with federal records.
The Local’s Ward 11 tracker, updated as of September 21, 2026, gives a similar account in its own words: a founding member of Climate Justice Toronto, past policy and government relations work at the Co-operative Housing Federation of Canada, an organizer with Friends of Chinatown TO and a board director of the Circle Community LandTrust. The Local also says she ran unsuccessfully in Spadina-Fort York for the NDP in the 2019 federal election, placing second behind the Liberal candidate. voche.me did not check that result against Elections Canada.
CBC News reported on August 17, 2026 that after Mike Layton filed his nomination for the ward, Diana Yoon said his bid was unexpected. CBC quotes her: “I believed that I had Mike Layton’s support and the news is unexpected, but we respect each other,” and “our campaign is still here to win this election.”
Her website sets out four platform pillars: build more affordable housing, enforce and expand renter protections, end chronic homelessness, and create better community spaces. The pages name specific proposals, including doubling the funding for the City’s Multi-Unit Residential Acquisition program, doubling the number of RentSafeTO bylaw officers, building 1,500 supportive and affordable homes in four years and starting a Ward 11 participatory budgeting pilot of up to $1 million. These are the campaign’s statements.