Gary Thomas may refer to:

• Gary Thomas (academic) (1938–2008), American academic
• Gary Thomas (author) (born 1961), American Christian writer
• Gary Thomas (cricketer) (born 1973), English cricketer
• Gary Thomas (musician) (born 1960), American jazz saxophonist
• Father Gary Thomas, an American exorcist and consultant to the film The Rite
• Gary L. Thomas, American game designer