GTB

GTB may refer to:
 * a music group from East Africa founded by gtbemzee and Mightytrevon [Glad To Be]
 * Gran Turismo Berlinetta, Ferrari car models
 * Global Trust Bank (India)
 * Goolpur Talbani railway station (Pakistan)
 * Textile and Clothing Union (Gewerkschaft Textil-Bekleidung), a former German trade union
 * GTB (advertising agency), Dearborn, Michigan, US
 * Wheeler-Sack Army Airfield, Fort Drum, New York, US, FAA LID
 * BT (musician), alias
 * Grand Theft Bus, a Canadian indie rock band
 * Google Toolbar
 * GTB Standard Time, an alternative name for Eastern European Time (used in Greece, Turkey, Bulgaria)
 * Guru Tegh Bahadur, ninth Sikh guru from 1665 to 1675
 * GTB Nagar, Delhi, India
 * GTB Nagar metro station
 * GTB Nagar railway station, Koliwada, Mumbai, India
 * GTB Nagar monorail station, Koliwada, Mumbai, India