In the foundations of mathematics, Aczel's anti-foundation axiom is an axiom set forth by Peter Aczel (1988), as an alternative to the axiom of foundation in Zermelo–Fraenkel set theory.

AC/DC are an Australian rock band formed in Sydney in 1973 by Scottish-born brothers Malcolm and Angus Young.

Dapsone, also known as diaminodiphenyl sulfone (DDS), is an antibiotic commonly used in combination with rifampicin and clofazimine for the treatment of leprosy.

Aczo District is one of six districts of the province Antonio Raymondi in Peru.

Canakinumab (INN, trade name Ilaris, previously ACZ885) is a human monoclonal antibody targeted at interleukin-1 beta.

Amir Dan Aczel (; November 6, 1950 – November 26, 2015) was an Israeli-born American lecturer in mathematics and the history of mathematics and science, and an author of popular books on mathematics and science.

Peter Henry George Aczel (; born October 31, 1941) is a British mathematician, logician and Emeritus joint Professor in the School of Computer Science and the School of Mathematics at the University of Manchester.

Aczél is a Hungarian surname meaning "steel". Notable people with the surname include:

ACZ may refer to: