Rez or REZ may refer to:

• Rez (video game), a 2001 Japanese rail shooter music video game released by Sega
• The Rez, a 1996-1998 Canadian television drama series
• Rez (Gex), a character in the video game series Gex
• Rez, a character in Spy Kids 3-D: Game Over

• "Rez" (song), a 1993 non-album track by Underworld in the UK
• Rez Band, also known as simply Rez, a former Christian heavy metal rock group from Chicago

• Rez, slang for an Indian reservation of United States Native Americans
• Rez, slang for an Indian reserve of Canadian First Nations peoples
• Rez dog (or reservation dog), a term for outdoor, stray, and feral dogs living on Indian reservations

• Rez Abbasi (born 1965), Pakistani-American fusion and jazz guitarist
• Rez Cortez (born 1956), Filipino film and television actor and assistant director
• Rez Gardi, Kurdish New Zealander international lawyer and human rights activist
• Rez Toledo, Filipino singer-songwriter
• Rezz (born Isabelle Rezazadeh; 1995), Canadian musician

• Řež, a village in the Czech Republic
• Rez, a resource compiler for the Apple Macintosh, see ResEdit

• Res (disambiguation)