Joseph Yu Kai Wong, (Chinese: ???) is a Canadian physician and philanthropist.
He founded the Yee Hong Centre for Geriatric Care in 1987.
He served as the chairman for the United Way of Greater Toronto from 1990 to 1992 and has been honorary chair since 1994.He was named Man of the Year in 1986 by the Toronto Star, and one of Toronto's most influential people in 1991 and 1992 by Toronto Life magazine.
He was awarded the Order of Canada in 1993.
Wong was the winner of the 2005 Power of Humanity award, presented to him by former Soviet Union President Mikhail Gorbachev.
Most recently, he was named one of the 180 most influential people in Toronto's history by the Toronto Star for the city's 180th birthday, under the Community Builders category.