Agg or AGG may refer to:
Offices Attorney General of Georgia Attorney General of Ghana Attorney General of Gibraltar Attorney General of Grenada Attorney General of Guam Attorney General of Guatemala Attorney General of Guyana Attorney General of the Gambia Auditor-General of Ghana
People Alfred John Agg (1830–1886), Australian colonial public servant Antonio Gandy-Golden (born 1998), American football player Lily Agg (born 1993), Irish professional footballer
Science and technology Abnormal grain growth, materials science phenomenon AGG (programming language) Anti-Grain Geometry, computer graphics rendering library Arginine, an amino acid with codon AGG Species aggregate, abbreviated "agg." Tirofiban, trade name Aggrastat, an antiplatelet drug
Other uses Aesthetic group gymnastics, gymnastics in a group Arctic Gateway Group, owner-operators of the Port of Churchill and the Hudson Bay Railway Art Gallery of Guelph Angor language (ISO 639-3 code) Angoram Airport in East Sepik Province, Papua New Guinea (IATA airport code AGG)