[1] Address Translation Cache (u.a. Bestandteil des M68060)

[2] Air Traffic Control {Luftfahrt}

[3] Applied Technology Council

[4] Arbitration Timing Control

[5] ATM Test & Conformance Center (GMD FOKUS)

[6] Australian Telecommunications Authority (->"Lexikon der Text- und Datenkommunikation")

[7] Automatic Transmission Control

[8] Arthur's Town, Bahamas - internationale Fughafen-Kennung.