Gamiz may refer to two surnames: Gámiz and Gamíz.
Notable people with the surname Gámiz include: Andrea Gámiz (born 1992), Venezuelan tennis player (1528–1588), Spanish sculptor Roberto Carlos Reyes Gámiz (born 1969), Mexican politician Sergio Gámiz (born 1978), Spanish footballer
Notable people with the surname Gamíz include: Luis Gamíz (born 2000), Mexican footballer