Gallo can refer to:

• E & J Gallo Winery, founded in 1933
• Ernest Gallo, co-founder
• Julio Gallo, co-founder
• Joseph Edward Gallo, brother of Ernest and Julio Gallo
• Gallo language, a regional language of France
• related to Gaul, as in Gallo-Roman culture
• Gallo (beer), from Guatemala
• Gallo Matese, a commune of 761 inhabitants in the province of Caserta, Italy
• Gallo Record Company, a South African record label
• The Gallo river, a tributary of the Tagus

Gallo is also a surname and can refer to:

• American gangsters:
• Albert Gallo, one of the "Gallo brothers"
• Joe Gallo, one of the "Gallo brothers"
• Joseph N. Gallo, consiglieri of the Gambino crime family
• Larry Gallo, one of the "Gallo brothers"
• Anna Maria Gallo, better known as Mary Frances of the Five Wounds of Jesus, Italian saint
• Dean Gallo, U.S. congressman
• Diego Gallo, a Uruguayan swimmer
• Domenico Gallo, an Italian composer and violinist whose works are sometimes mistakenly attributed to Pergolesi.
• Fortune Gallo, impressario of the San Carlo Opera Company
• Max Gallo, a French author who wrote a series of novels based on the life of Napoleon I of France
• Robert Gallo, a retrovirus expert
• Vincent Gallo, a film directorPopular culture
• Boss Gallo, the Gungan hero and ancestor of Boss Nass who united the Gungan tribes 3000 years before Star Wars: Episode I