Saar can mean:

• Ain Saar, a Võro-Jewish freedom fighter
• Saarland, a federal state of Germany
• Saar River, a river running through the borderlands of France and Germany
• Saar (protectorate), a French protectorate (1947-1957)
• Saar (League of Nations), a League of Nations governed territory (1920-1935)
• Sarre (département), a French département (1798-1814)
• Saar, Bahrain, a town in Bahrain
• Saar, Johann Jacob, a 17th century German explorer from Nuremberg
• Saar, several classes of Israeli missile boats:
  • Saar 3 class missile boat
  • Saar 4 class missile boat
  • Saar 4.5 class missile boat
  • Saar 5 class missile boat
• Saar, a male name in Hebrew derived from one of two words: Se'ara (storm) or Sahar (crescent)