In Chinese, the word tong means "hall" or "gathering place". In North America, a tong (Chinese: 堂; pinyin: táng; Cantonese Yale: tong; literally: "hall") is a type of organization found among Chinese living in the United States and Canada. These organizations are described as secret societies or sworn brotherhoods and are often tied to criminal activity. In the 1990s, in most American Chinatowns, clearly marked tong halls could easily be found, many of which have had affiliations with Chinese crime gangs.
Today tongs are, for the most part, members of the Chinese Consolidated Benevolent Associations, which are pro-Kuomintang traditional groups. These associations provide essential services for Chinatown communities such as immigrant counseling, Chinese schools, and English classes for adults. Tongs follow the pattern of secret societies common to southern China and many are connected to a secret society called the Tiandihui, which follows this pattern. Other groups worldwide that follow this pattern and are connected with the Tiandihui are known as hui, Hongmen, and triads.
Prior to the 1840s, a few Chinese emigrated to the United States or Canada, although large numbers had left China, particularly Fujian and Canton, since the seventeenth century to seek their fortune in southeast Asia and Taiwan.
After settling in San Francisco and other California cities, Chinese workers faced hostility from their American peers who felt threatened by the Chinese who worked for lower wages. As labor unions and angered workers became more aggressive, many Chinese felt pressure to leave and go east, where they heard life would be less dangerous. As a result, many Chinese immigrants moved to cities such as New York and Boston where today there are large enough populations to build communities known as "Chinatowns".