TTD

TTD may refer to:

Places and organizations

• Tirumala Tirupati Devasthanams, an independent trust which manages the Sri Venkateswara Temple in Andhra Pradesh, India
• Portland-Troutdale Airport, IATA airport code
• The Trade Desk, NASDAQ symbol

Entertainment

• Tic-Tac-Dough, a game show
• Transport Tycoon Deluxe, a computer game

Medicine

• Therapeutic Targets Database, a database to provide information about the known and explored therapeutic targets
• Trichothiodystrophy, a characteristic of Tay syndrome

Other

• Trinidad and Tobago dollar, ISO 4217 currency code
• Terence Trent D'Arby, former stage name of singer Sananda Maitreya
• Tombstone Tenzan Driver, the name of the finisher of Japanese pro wrestler, Hiroyoshi Tenzan
• True time delay, an electrical property of a transmitting apparatus
• Top Thrill Dragster, the second tallest and third fastest roller coaster in the world located at Cedar Point
• Total Terminal Difficulty, the total number of hashes on a blockchain before a specific protocol upgrade will occur