James Henry Cabanis (December 25, 1838 – 1920) was an American merchant from Georgetown, Grant County, Wisconsin who spent two years as a Republican member of the Wisconsin State Assembly from Grant County.
His family moved from Illinois to Wisconsin, in 1845, and settled in Grant County, where he received what was termed "an academic education".
James Cabanis was elected to the Assembly for 1881 to succeed fellow Republican Charles Watson, who was not a candidate for re-election, for the 1st Grant County Assembly district, substantially the same as that from which his father had been elected.
[1] In 1882, he was re-elected, winning 940 votes to 493 for independent H. Robbins and 14 for Greenbacker E. Wetherbee.
He also served on the Grant County Board of Supervisors and was Mayor of Platteville, Wisconsin.