Jan Herman "Caius" Welcker (9 July 1885 – 13 February 1939) was a Dutch football (soccer) player who competed in the 1908 Summer Olympics. He was born in Alkmaar and died in Schiedam.[1]
Welcker, who formed the famous right wing of his club side Quick and the national team with Edu Snethlage, won 15 caps, scoring five times.[2] He was a member of the Dutch team, which won the bronze medal in the football tournament.