Robert Bruce Fraser Peirce (February 17, 1843 – December 5, 1898) was an American lawyer, Civil War veteran and politician who served one term as a U.S. Representative from Indiana from 1881 to 1883.

Born in Laurel, Indiana, Peirce attended the public schools and was also educated by private tutors.

He served in the Civil War as second lieutenant of Company H, One Hundred and Thirty-fifth Regiment, Indiana Volunteers.

He resumed the practice of law, and was appointed receiver for the Toledo, St. Louis and Western Railroad.

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