Wong Foon Sien, also simply known as Foon Sien, was a Canadian journalist and labour activist. He devoted time to a number of civil and human rights organizations, was one of the early leaders of the Chinese Benevolent Association in Vancouver, and was "perhaps the most influential person" in the city's Chinatown. He was sometimes referred to as the "spokesman for Chinatown", or as "mayor of Chinatown" by Vancouverites, to the resentment of some Chinese Canadians in the community.

Chinatown is a neighbourhood in Vancouver, British Columbia, and is Canada's largest Chinatown. Centred around Pender Street, it is surrounded by Gastown to the north, the Downtown financial and central business districts to the west, the Georgia Viaduct and the False Creek inlet to the south, the Downtown Eastside and the remnant of old Japantown to the northeast, and the residential neighbourhood of Strathcona to the southeast.