Zer may refer to:

• Zer or Tser (צֵר), name of a city of the Naphtalites in Joshua 19:35.
• Zer, the name of the letter zayn (ز) in the Urdu alphabet.
• Djer, the third pharaoh of the First Dynasty of Egypt.

• Marcel Caron
• Marcel Carpentier (cyclist)
• Marcel Carriere
• Marcel Carrière
• Marcel Chennaux
• Marcel Chladek
• Marcel Chládek
• Marcel Claret Trophy
• Marcel Claude
• Marcel Claudel
• Marcel Claude Reyes
• Marcel Clause
• Marcel Coal Mine
• Marcel Colomb First Nation
• Marcel Coraş
• Marcel Correia
• Marcel Cote
• Marcel Couraud
• Marcel Cummings-Toone
• Marcel Cupak
• Marcel Cupák
• Marcel Curuchet
• Marcel Côté
• Marcel Dandeneau
• Marcel De Boodt