The City Park Co-operative Apartments is a housing co-operative located in the Church-Wellesley Village in Toronto, Ontario. Comprised of 774 residential units across three 14-storey buildings located at 484 Church St., 31 Alexander St., and 51 Alexander St., the City Park Co-op is the largest housing co-operative in Canada.

The City Park Apartments (CPA) were designed by German architect Peter Caspari and was the first modern multi-residential housing project in Toronto. Opened in 1955, the CPA replaced houses demolished after the completion of the Yonge subway station in 1954. As Toronto's gay nightlife gradually moved from Queen and King Streets to Yonge Street in the 1950s, the CPA became vital to the development of the Church-Wellesley Village in the postwar period as its central location and inexpensive units attracted gay men and, later, the broader LGBTQ+ community. The CPA would go on to earn the nickname "the Queen's Palace" among locals.

In June 1989, the CPA went up for sale. The CPA's long-running tenant association, the City Park Tenants' Association (CPTA), organized with their consultants and tenants to facilitate the apartments' sale to Codevelco Non-Profit Dwellings, a non-profit company controlled by the Co-operative Housing Federation of Toronto. The CPA was bought for $59,366,752 with the assistance of a $68 million loan from the Ontario Ministry of Housing under the Homes Now co-operative housing program. The CPA's sale to a non-profit company would allow the CPTA to transition the apartment complex as a housing co-operative. On December 2, 1989, the CPTA held a vote for tenants to decide whether they wanted to form a co-operative to run CPA. The vote passed with 93% in favour of forming a co-op. The City Park Co-operative Apartments held their first co-operative general meeting on January 20, 1990.