Theodor Körner may refer to:

• Theodor Körner (author) (1791–1813), German poet and soldier
  • Theodor Körner (opera), premiered in 1872, based on an episode in the life of the German poet and soldier
• Theodor Körner (politician) (1941 — 2018), German administrative lawyer and local politician
• Theodor Körner (president) (1873–1957), president of Austria 1951–1957
  • Theodor Körner Prize, a set of annual Austrian awards
• Theodor Christian Körner [de] (1863–1933), German merchant and politician