Johan Vonlanthen (born 1 February 1986 in Santa Marta, Colombia) is a Swiss international footballer. Vonlanthen plays at club level for PSV Eindhoven as an attacking midfielder, and internationally for Switzerland as a striker. His father is a Swiss national, giving him the right to play for that country.

In the 2004 European Championships, Vonlanthen became the second youngest player to play in the tournament when he came on as a substitute against England. On June 21st, 2004, Vonlanthen became the youngest scorer ever in the championships when he equalised against France, beating the record (set only four days earlier by Wayne Rooney in the England-Switzerland match) by three months.