A mason is a worker in brick or stone, now primarily involved in building walls, but previously also arches and vaults. (See Masonry.)

A Mason is a member of the Free and Accepted Masons, a fraternal organization. (See Freemasonry.)

Mason is the name of several places in the United States of America:

• Mason, Michigan
• Mason, New Hampshire
• Mason, Ohio
• Mason, Texas
• Mason, West Virginia
• Mason, Wisconsin
• Mason Township, Michigan
• Mason City, Illinois
• Mason City, Iowa

People named Mason include:

• Astronomer Charles Mason (of the Mason-Dixon line)
• Actor James Mason
• Fictional lawyer Perry Mason
• Pink Floyd drummer Nick Mason

de:Steinmetz