ATK may refer to:
The Atkinson–Shiffrin model (also known as the multi-store model or modal model) is a model of memory proposed in 1968 by Richard Atkinson and Richard Shiffrin.
Atkinsonella is a genus of fungi within the Clavicipitaceae family.
Atkinson Township is a township in Carlton County, Minnesota, United States. The population was 319 as of the 2000 census.
The ATKV-Prosaprys (AKTV Prose Prize) is a literary award awarded annually by the ATKV to an Afrikaans writer for a work of prose published during the previous calendar year.
Atkinson Township may refer to one of the following places in the United States:
WS Atkins plc (commonly known as Atkins) is a British multinational engineering, design, planning, architectural design, project management and consulting services company headquartered in Epsom, Surrey.
The Atkins Commercial Historic District encompasses the historic business district of Atkins, Arkansas.
The Atkins diet, also known as the Atkins nutritional approach, is a low-carbohydrate diet promoted by Robert Atkins and inspired by a research paper he read in The Journal of the American Medical Association.
Atkinson is an English-language surname. The name is derived from a patronymic form of the Middle English Atkin.