TGA

TGA may refer to:
 * The IATA Airport Code for Tengah Air Base, Singapore
 * Tandy Graphics Adapter for the Tandy 1000 computer system
 * Tasman Global Access, a submarine cable linking Australia and New Zealand
 * Tennessee Governor's Academy for Math and Science, United States
 * Therapeutic Goods Administration, Australian regulatory body
 * Thermogravimetric analysis, materials testing procedure
 * Thioglycolic acid, organic compound
 * Tooronga railway station, Melbourne
 * Transient global amnesia, a medical condition
 * Transposition of the great arteries, a congenital heart defect
 * Treasury General Account, a bank account held by the US government
 * Truevision TGA or TARGA, graphics file format
 * Tonga (IOC country code)
 * TGA, one of three stop codons
 * The Game Awards, annual awards ceremony for the video game industry
 * The Gainsborough Academy, a school