Galen Benjamin Seaman (August 8, 1837 – September 12, 1932) was an American lawyer and politician.
Born in Millport, Chemung County, New York, Seaman graduated from Dartmouth College in 1861.
In 1862, Seaman moved to Milwaukee, Wisconsin, and was the principal of Mitchell Public School from 1862 to 1865, during which time he studied the law.
In 1886, Seaman served in the Milwaukee Light Horse Squadron during the Bay View Labor Riots of 1886.
This article about a Republican Party member of the Wisconsin State Assembly born in the 1830s is a stub.