GTB

GTB may refer to:
 Genting Airport, a non-existent airport in Malaysia
 Global Team Blue, an advertising agency
 Global Trust Bank (India)
 Goolpur Talbani railway station, in Pakistan
 Guaranty Trust Bank, in Nigeria
 Textile and Clothing Union, a former German trade union
 Wheeler-Sack Army Airfield, at Fort Drum, New York, United States
 GTB, a pseudonym used by BT (musician) early in his career