William Collins (February 22, 1818 – June 18, 1878) was an American lawyer and politician who served one term as a United States representative from New York from 1847 to 1849.

He studied law with his father, was admitted to the bar and commenced practice in Lowville.

In November 1847, William Collins married Jane Kelley; they had seven children.

[1] Collins moved to Cleveland, Ohio in 1853 and continued the practice of law, and also engaged in banking and business.

He affiliated with the Republican Party upon its organization in 1856, and died in Cleveland on June 18, 1878.