Thomas Reed Cobb (July 2, 1828 – June 23, 1892) was an American lawyer and politician who served five terms as a U.S. Representative from Indiana from 1877 to 1887.

He was admitted to the bar in 1851 and commenced practice in Bedford, Indiana.

He served as chairman of the Committee on Mileage (Forty-fifth and Forty-sixth Congresses), Committee on Public Lands (Forty-eighth and Forty-ninth Congresses).

He resumed the practice of law and also engaged in agricultural pursuits.

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