Josiah Fisk (September 8, 1781 in Haverhill, Grafton County, New Hampshire – August 10, 1844 in Keeseville, Clinton County, New York) was an American politician from New York.
In 1806, he married Phebe Peters (1785–1860), and they had seven children.
He was a member of the New York State Assembly (Clinton Co.) in 1825 and 1826.
He was President of the Temperance Society of Keeseville.
He was buried at the Keeseville Old Cemetery in Au Sable, New York.