Stormtrooper has several possible meanings:

• Stormtrooper, a member of German regular army shock troops (Sturmtruppen)
• Shock troops, commandos, or special forces in general
• Sturmmann, the rank of "Stormtrooper"
• Sturmabteilung, a paramilitary organization of the German Nazi Party (also known as the SA, or Brownshirts)
• Sturmtruppen, an Italian anti-war comic book series
• Imperial stormtrooper, from the fictional Star Wars universe
• Stormtrooper effect, a phenomenon in action movies, animes, comics and mangas
• Stormtrooper was a magazine (circa 1960s) of the American Nazi Party