William Mason (1719 – 29 September 1791) was a Calvinist writer.
Mason was born in Rotherhithe. He wrote a number of very popular Christian books, and was twice briefly editor of The Gospel Magazine, immediately before and immediately after Augustus Montague Toplady.
William Mason may refer to:
"William Mason" is a 4-4-0 steam locomotive currently in operation at the Baltimore and Ohio Railroad Museum in Baltimore, Maryland, USA. It was built for the Baltimore and Ohio Railroad, carrying that railroad's number 25. The locomotive is named in honor of its builder, William Mason, who built around 754 steam locomotives at his Mason Machine Works firm in Taunton, Massachusetts from 1853 until his death in 1883. The engine is one of the oldest operable example of the American Standard design, and the fourth oldest Baltimore and Ohio locomotive in existence, the oldest being the 0-4-0 no. 2, the "Andrew Jackson" from 1836, second oldest is the no. 8 0-4-0, "John Hancock" built later that same year, and the third being the 0-8-0 no. 57, "Memnon" of 1848 (the preserved "Tom Thumb" and "Lafayette" engines are replicas built by the road for exhibition purposes in 1926 and 1927, respectively). The William Mason is the second oldest operational locomotive in the world, and the oldest in the western hemisphere. Only the Indian locomotive Fairy Queen, built one year prior to the William Mason is older.
William Mason (September 10, 1786 – January 13, 1860) was a United States Representative from New York.
Mason was born in Lebanon, Connecticut on September 10, 1786. He studied medicine in Vermont and practiced in Preston, New York; surgeon of the Chenango County Company, New York Volunteers, in 1812; clerk of Chenango County in 1820 – 1821; member of the New York State Assembly in 1821 and 1822; elected as a Jacksonian to the 24th United States Congress (March 4, 1835 – March 3, 1837); died in Norwich, New York on January 13, 1860; interment in Mount Hope Cemetery.