Belden Gerald Bly Jr. (September 29, 1914 in Everett, Massachusetts – November 3, 2006 in Wakefield, Massachusetts) was an American teacher and member of the Massachusetts House of Representatives for 16 terms from 1949 to 1980, representing Saugus, Massachusetts.Bly was born in Everett and grew up in Revere, Massachusetts. He graduated from Dartmouth College in 1938.