title: Siegfried I
text: # Siegfried I
  
  Siegfried I may refer to:
  
  * Siegfried of Luxembourg (922–998), first count of Luxembourg
  * Siegfried I, Count of Sponheim (c. 1010 – 1065)
  * Siegfried I (Archbishop of Mainz) (died 1084)
  * Siegfried I, Prince of Anhalt-Zerbst (c. 1230 – 1298)
  