ACK
Template:Sister project ACK, Ack or Acks may refer to:
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Computing
- Acknowledgement (data networks)
- ACK (TCP), the control character used in the Transmission Control Protocol to acknowledge receipt of a packet
- Amsterdam Compiler Kit, a retargetable compiler suite and toolchain
People
- Ack Kinmonth, 21st century Australian composer
- Ack van Rooyen (1930–2021), Dutch jazz trumpeter and flugelhornist]]
- Ron Acks (1944–2023), American National Football League player
Transportation
- Nantucket Airlines or ACK Air, an American airline
- IATA airport code for Nantucket Memorial Airport, Massachusetts, US
- ACK, station code for Acklington railway station, Acklington, Northumberland, UK
Other uses
- Anglican Church of Kenya
- Amar Chitra Katha, an Indian comic book publisher
- Assumption College, Kilmore, an Australian school
- ack, ISO 639-3 code for Akakhora, an extinct Great Andamanese language
- TNK2 or ACK or ACK1, an enzyme that in humans is encoded by the TNK2 gene
See also
- Armstrong Whitworth F.K.8, an early biplane known as the "Big Ack"
- Ack Ack (disambiguation)