ACMA may refer to:
- American Composites Manufacturers Association - the trade association for composites manufacturers in the United States
- Australian Communications and Media Authority – the Australian government regulation agency for broadcasting, radio communications and telecommunications.
- Australasian Computer Music Association – a non-profit Australia and New Zealand based organisation which aims to promote electroacoustic and computer music.
- An associate of the Chartered Institute of Management Accountants - a United Kingdom-based professional body offering training and qualification in management accountancy and related subjects, focused on accounting for business; together with ongoing support for members.
- ACMA (Ateliers de construction de motocycles et d'automobiles), a French builder of motorcycles, scooters and micro-cars
- Acma - a family surname particularly in the Philippines dating to the 1800s; South America as early as 1700s