James Mullett Jr. (October 13, 1784 – September 10, 1858) was an American lawyer, judge, and politician.

[1] While working as a clerk in Fredonia, Mullett acted as stand-in counsel for his employer when their attorney failed to appear in court.

[1] He held that role for a year, then was elected to serve on the New York Supreme Court in June 1847.

[1] As a member of the Bucktails—a faction of the Democratic-Republican Party opposed to Governor of New York DeWitt Clinton—Mullett was elected and served in the 46th New York State Legislature for calendar year 1823, and in the 47th New York State Legislature for calendar year 1824, representing Chautauqua County.

[3] In 1851, Mullett was seriously injured when thrown from his carriage, suffering a fractured skull.