Bitter (surname)

• Billy Bitter, an American lacrosse player
• Francis Bitter, an American physicist who invented the Bitter electromagnet, which uses circular metal plates instead of wire coils
• Friedrich August Georg Bitter, a German botanist and lichenologist
• Johannes Bitter, a German team handball player
• Karl Bitter, an Austrian-born United States sculptor
• Karl Hermann Bitter, Prussian statesman
• , Dutch resistance fighter forced to collaborate with the German regime after his capture

• Peter von Bitter, a German-born Canadian palaeontologist
• Pieter de Bitter, a 17th-century Dutch officer of the Dutch East India Company
• Susan Bitter Smith, an Arizona Republican politician
• Theo Bitter, a Dutch graphic artist, painter and draftsman.