ATD may refer to:

Computing and technology

Anthropomorphic test device A crash test dummy, or simply dummy, is a full-scale Anthropomorphism, anthropomorphic test device (ATD) that simulates the dimensions, weight proportions and articulation of the human body during a traffic collision. Dummies are used by researc ...

, also known as a crash test dummy * ''

at (command) at is a shell command for scheduling commands to be executed at a future time; once. The command was developed for Unix and is available on Unix and Unix-like systems, Windows, and ReactOS. Variants Unix-like On Unix-like operating systems, ...

'' or @daemon (spelled "atd", lower case), standard Unix program * Azimuth tractor drive, drive system for tugboats

Medicine and science

* 1,4,6-Androstatrien-3,17-dione, estrogen inhibitor *

Acute tryptophan depletion Acute tryptophan depletion (ATD) is a technique used extensively to study the effect of low serotonin in the brain. This experimental approach reduces the availability of tryptophan, an amino acid Amino acids are organic compounds that conta ...

* Anti-thyroid drugs or

antithyroid agent An antithyroid agent is a hormone inhibitor acting upon thyroid hormones. The main antithyroid drugs are carbimazole (in the UK), methimazole (in the US), and propylthiouracil (PTU). A less common antithyroid agent is potassium perchlorate. ...

Other uses

* ATD Fourth World * '' Against the Day'', Thomas Pynchon novel * Association for Talent Development, non-profit association *

Attention to Detail Attention to Detail Ltd (ATD) was a British video game developer based in Hatton, Warwickshire, Hatton. Founded by University of Birmingham graduates in September 1988, it was acquired by Kaboom Studios in January 1997. The studio shut down in ...

, defunct British video-game developer * Postal code for

Attard Attard () is a town in the Northern Region of Malta. Together with Balzan and Lija, it forms part of the " Three Villages" () and has been inhabited since the Classical Period. It has a population of 12,268 as of 2021. Attard's traditional ...

, Malta {{disambig