Josiah Ogden Hoffman (May 3, 1793 - May 1, 1856) was a United States Representative and Attorney General of the State of New York. Born in New York City, he pursued classical studies and graduated from Columbia College in 1812. He served for three years in the Navy and was warranted a midshipman in 1814. He studied law, was admitted to the bar in 1818 and commenced practice in Goshen. He was district attorney of Orange County from 1823 to 1826, and returned to New York City. He was a member of the New York State Assembly in 1825, 1826, and 1828, and was district attorney of the city and county of New York from 1829 to 1835.
Hoffman was elected as a Whig to the Twenty-fifth and Twenty-sixth Congresses, serving from March 4, 1837 to March 3, 1841). He was then United States Attorney at New York from 1841 to 1845, and was New York State attorney geneneral from November 8, 1853, to November 7, 1855. He died in New York City in 1856; interment was in St. Mark's Church vault.