|Roles||Competed in Olympic Games|
|Full name||Anthony Carl•Williamsen|
|Born||31 January 1880 in Milwaukee, Wisconsin (USA)|
|Died||1 October 1956 in Milwaukee, Wisconsin (USA)|
Anthony Williamsen raced four events at the 1904 St. Louis Olympics. He was from Milwaukee and later worked for the city in various jobs. He was a tax collector in the 1910s, and worked for the water and wells services as a clerk in 1940.
|Games||Discipline (Sport) / Event||NOC / Team||Pos||Medal||As|
|1904 Summer Olympics||Cycling Track (Cycling)||USA||Anthony Williamsen|
|¼ mile, Men (Olympic)||3 h4 r1/3|
|½ mile, Men (Olympic)||3 h3 r1/3|
|1 mile, Men (Olympic)||4 h2 r1/2|
|25 miles, Men (Olympic)|
Name also seen as Anthony Williamson, but Anthony Williamsen is correct per US censuses and family trees.