Sug was a Japanese rock band founded in 2006.
Sug may also refer to:
- Sulu (also spelled sug), an autonomous island province of the Philippines
- Surg, Birjand, South Khorasan Province, Iran, a village also known as Sūg
- Sug Cornelius (1906–1968), American baseball pitcher in the Negro leagues
- SUG, IATA code for Surigao Airport, Philippines
- sug, ISO 639-3 code for the Suganga language, spoken in New Guinea