| 1896 |
Thomas Burke, United States |
54.20 |
| 1900 |
Maxwell Long, United States |
49.40 |
| 1904 |
Harry Hillman, United States |
49.20 |
| 1906 |
Paul Pilgrim, United States |
53.20 |
| 1908 |
Wyndham Halswelle, Great Britain
(walkover) |
50.00 |
| 1912 |
Charles Reidpath, United States |
48.20 |
| 1920 |
Bevil Rudd, South Africa |
49.60 |
| 1924 |
Eric Liddell, Great Britain |
47.60 |
| 1928 |
Ray Barbuti, United States |
47.80 |
| 1932 |
William Carr, United States |
46.20 |
| 1936 |
Archie Williams, United States |
46.50 |
| 1948 |
Arthur Wint, Jamaica, B.W.I. |
46.20 |
| 1952 |
George Rhoden, Jamaica, B.W.I. |
45.90 |
| 1956 |
Charles Jenkins, United States |
46.70 |
| 1960 |
Otis Davis, United States |
44.90 |
| 1964 |
Mike Larrabee, United States |
45.10 |
| 1968 |
Lee Evans, United States |
43.80 |
| 1972 |
Vincent Matthews, United States |
44.66 |
| 1976 |
Alberto Juantorena, Cuba |
44.26 |
| 1980 |
Viktor Markin, USSR |
44.60 |
| 1984 |
Alonzo Babers, United States |
44.27 |
| 1988 |
Steve Lewis, United States |
43.87 |
| 1992 |
Quincy Watts, United States |
43.50 |
| 1996 |
Michael Johnson, United States |
43.49 |
| 2000 |
Michael Johnson, United States |
43.84 |
| 2004 |
Jeremy Wariner, United States |
44.00 |
| 2008 |
LaShawn Merritt, United States |
43.75 |