Theodosia Salome Okoh ( 13 June 1922 -- 19 April 2015 ) was a Ghanaian stateswoman , teacher and artist known for designing Ghana 's flag in 1957 .
Theodosia Salome Okoh ( 13 June 1922 -- 19 April 2015 ) was a Ghanaian stateswoman , teacher and artist . She was known for designing Ghana 's flag in 1957 .