Famous Masons
There have been 14 American Presidents who have been Brother Masons, plus one who was initiated (Lyndon Johnson).
George Washington (1st)
Fredericksburg Lodge No. 4, Fredericksburg, Virginia; Alexandria-Washington Lodge No. 22
James Monroe (5th)
Williamsburg Lodge No. 6, Williamsburg, Virginia
Andrew Jackson (7th)
Harmony Lodge No. 1, Nashville, Tennessee; Grand Master 1822-23, Tennessee
James Polk (11th)
Columbia Lodge No. 31, Columbia, Tennessee (r. 9/4/1820)
James Buchanan (15th)
Lodge No. 43, Lancaster, Pennsylvania (r. 1/24/1817)
Andrew Johnson (17th)
Greeneville Lodge No. 119, Greeneville, Tennessee (r.1/24/1817)
James Garfield (20th)
Magnolia Lodge No. 20 (E.A. and F.C.), Columbus Lodge No. 30, Columbus, Ohio (r. 11/22/1864)
William McKinley (25th)
Hiram Lodge No. 21, Winchester, Virginia (r. 4/3/1865)
Theodore "Teddy" Roosevelt (26th)
Matinecock Lodge No. 806, Oyster Bay, New York (r. 4/24/1901)
William H. Taft (27th)
Made a Mason at sight 2/18/1909 in Cincinnati, Ohio; affiliated with Kilwinning Lodge 356, Ohio
Warren Harding (29th)
Marion Lodge No. 70, Marion, Ohio (r. 8/13/1920)
Franklin D. Roosevelt (32nd)
Holland Lodge No. 8, New York, New York (r. 11/28/1911)
Harry S. Truman (33rd)
Belton Lodge No. 450 (r. 3/18/1909), Belton, Missouri; Grand Master 1940-41, Missouri
*Note: MW Harry S. Truman is the only American President to have been presented with a 50-year Masonic service pin Gerald Ford (38th) Malta Lodge No. 465 (r. 5/18/1951), Grand Rapids, Michigan (raised by Columbia Lodge No. 3, Washington , D.C. as courtesy)
Honorable Mention: Lyndon B. Johnson, initiated but never passed nor raised
i. October 30, 1937, Johnson City Lodge No. 561, Johnson City, Texas
Other interesting links to famous Masons
List of famous Freemasons from the Grand Lodge of British Columbia and Yukon web page (a very informative page)
Paul Bessel's Presidents as Masons page