Mazer may refer to:

• Mazer (drinking vessel), a type of cup mostly made from the 13th to the 16th centuries
• Mazer Rackham, a fictional character from Orson Scott Card's Ender's Game series
• Bill Mazer, a famous American sportscaster
• Norma Fox Mazer, author of books for children and young adults
• Johan Mazer, Swedish musician
• Mazer (video game), a 1996 video game by American Laser Games
• Mazer Zaouia, a village in El Oued Province, Algeria

• Maser, a device that emits microwaves by stimulated emission, similar to a laser but using a longer wavelength.
• Mazar (disambiguation)
• Mazor (disambiguation)
• Mazur (disambiguation)