Datu Mustapha bin Datu Harun, ko Tun Mustapha A takaice (31 watan Yuli shekara ta 1918 zuwa 2 ga watan Janairu shekara ta 1995 [1]), babban ɗan siyasa kasar Malaysian ne wanda ya yi aiki a matsayin Babban Minista na 3 na Sabah daga watan Mayu shekara ta 1967 zuwa Nuwamba shekara ta 1975 da kuma Yang Di-Pertua Negara a 1 ga watan Satumba shekara ta 1963 zuwa Satumba shekara ta 1965 kuma Shugaban Ƙungiyar Sabah ta Ƙasa (USNO). Ya kasance muhimmiyar jam'iyya a cikin tattaunawar da ta kai ga kafa Malaysia a ranar 16 ga Satumba shekara ta 1963.