Roswell A. Parmenter (September 20, 1821 – February 1, 1904) was an American lawyer and politician from New York.

[1] He studied law, was admitted to the bar, and practiced in Troy.

He was a member of the New York State Senate (12th D.) in 1874 and 1875.

At the New York state election, 1881, he ran on the Democratic ticket for New York Attorney General, but was defeated by Republican Leslie W. Russell.

Parmenter was Corporation Counsel of Troy from 1886 to 1890.