Joseph Grant Beale (March 26, 1839 – May 21, 1915) was a Republican U.S. Representative from the state of Pennsylvania.

During the American Civil War, he enlisted in the Friend Rifles for three months, and later served as captain of Company C, Ninth Regiment, Pennsylvania Reserves, for three years.

Discontinuing the study of law, he engaged in the coal business in the suburbs of Pittsburgh.

In 1868, he moved to Leechburg, Pennsylvania, and actively engaged in the iron and steel business.

He served as president of the Leechburg Banking Co. Beale was elected as a Republican to the Sixtieth Congress, but was an unsuccessful candidate for renomination in 1908.