Joachim Frederick may refer to:

• Joachim Frederick, Elector of Brandenburg (1546–1608), Prince-elector of the Margraviate of Brandenburg
• Joachim Frederick of Brieg (1550–1602), Duke of Oława, Wołów, Brzeg, and Legnica
• Joachim Frederick, Duke of Schleswig-Holstein-Sonderburg-Plön (1668–1722), third Duke of Schleswig-Holstein-Plön

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