Donald Johnston

Donald or Don Johnston may refer to:


 * Donald R. Johnston (1947–1969), American soldier and Medal of Honor recipient
 * Donald Johnston (rower) (1899–1984), American rower and Olympic gold medalist
 * Donald Johnston (cricketer) (1894-1918), English cricketer and British Army officer
 * Don Johnston (1936–2022), Canadian politician and lawyer
 * Don Johnston (swimmer) (1929–2018), South African swimmer