Joachim Yaw Acheampong (born 2 November 1973 in Accra), known as Yaw, is a Ghanaian retired footballer who played as a midfielder.
In his country Yaw represented Goldfields Obuasi (1990–94), Power FC (1999–2000) and King Faisal Babes (2001). Abroad he played for IFK Norrköping in Sweden (1994–95), Spain's Real Sociedad (1995–97) and Hércules CF (1997–98) and Samsunspor (1998) and Yimpaş Yozgatspor (2001–02) from Turkey.
Yaw retired from professional football at the age of only 28.
Yaw was part of the Ghanaian Olympic team who won the bronze medal at the 1992 Summer Olympics in Barcelona. He featured in five of six games in the tournament.
Yaw gained 18 caps with the full side, during five years. He appeared in two Africa Cup of Nations editions.