TGG

TGG may refer to:

• Rugby league football, sometimes referred to as The Greatest Game, shortened to "TGG"
• Sultan Mahmud Airport, airport serving Kuala Terengganu, with IATA code: TGG
• Terbium gallium garnet, a chemical compound whose crystals have a high Verdet constant
• The Golden Girls, television comedy
• The Good Guys (Australasia), chain of consumer electronics retail stores in Australia and New Zealand
• The Gores Group, a private equity firm
• The Great Gatsby, novel by the American author F. Scott Fitzgerald
• The Greatest Generation (podcast), Star Trek podcast
• The Guy Game, adult video game for the PlayStation 2 and Xbox
• Transformational-generative grammar, generative grammar developed in the Chomskyan tradition
• Tryptophan, written as TGG in the DNA codon table