Truman Adams Merriman (September 5, 1839 – April 16, 1892) was an American lawyer, Civil War veteran, and politician who served two terms as a U.S. Representative from New York from 1885 to 1889.

Merriman attended Auburn Academy, and in 1861 he graduated from Hobart College in Geneva, New York.

He entered the Union Army in September 1861 as a captain, commanding a company which he had raised as part of the 92nd New York Volunteer Infantry.

He died in New York City April 16, 1892, and was interred at Fort Hill Cemetery in Auburn.

This article incorporates public domain material from the Biographical Directory of the United States Congress