James Washington Singleton (November 23, 1811 – April 4, 1892) was a U.S. Representative from Illinois.

Singleton was elected brigadier general of the Illinois Militia in 1844 and took a conspicuous part in the so-called Mormon War.

He was appointed in 1862 by Governor Yates as a member of the commission to confer with the British and Canadian authorities on the establishment of continuous water communication between the United States and Canada.

He was interred in Mount Hebron Cemetery, Winchester, Virginia.

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