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