Alexander Tachie-Mensah (born 15 February 1977) is a Ghanaian former professional footballer who played as a forward. After his retirement, he became a coach.
Tachie-Mensah was born in Accra.
He last played for FC St. Gallen and retired on 9 June 2009.
Tachie-Mensah was a member of the Ghana national team and was called up to the 2006 World Cup.
After his retirement, Tachie-Mensah became the head coach an FC Frauenfeld youth team in August 2009.
He later became assistant coach at fifth-tier side FC Kreuzlingen.