George Bassett Clark

George Bassett Clark (February 14, 1827 - December 20, 1891) was an American astronomer.

Born in Lowell, Massachusetts, he was the son of Alvan Clark, part of a family of refracting telescope makers in the 19th century. The family telescope works in Cambridge MA made many of the record-breaking refracting instruments, including the still-largest refracting telescope at the Yerkes observatory .