James Joseph "J.J." Foy (February 22, 1847 – June 13, 1916) was an Ontario lawyer and political figure.

He represented Toronto South in the Legislative Assembly of Ontario as a Conservative member from 1898 to 1916.

He was called to the bar in 1871 and set up practice with a law firm in Toronto.

[1] In 1902 Foy served as a pall-bearer at the funeral for his longtime friend, Catholic railway magnate, John Ryan; alongside fellow Ontario politicians George Taylor Fulford, William Henry Comstock, and G.P.

Foy helped finance the Catholic Register, a Catholic weekly newspaper based in Toronto.