Gee Whiz or variations may refer to:

• "Gee Whiz (Look at His Eyes)", a song performed by Carla Thomas (1960) and Bernadette Peters (1980)
• "Gee Whiz", an episode of Aqua Teen Hunger Force (season 3) TV series
• Gee Whiz-z-z-z-z-z-z, a 1956 Warner Bros. cartoon in the Looney Tunes series
• Gee-whiz graph, a misleading graph in statistics
• REVAi, known as REVA G-Wiz in the UK, an electric car
• Gary G-Wiz, Gary Rinaldo (born 1969), American record producer
• George W. Dick (born 1964), known as G-Wiz, American musician
• G-Wizz, an ITV Granada online platform

• GW-BASIC, is a dialect of the BASIC programming language