Acer may refer to:
- Acer (genus), a genus of trees and shrubs
- Acer (company), a Taiwan-based computer company.
- Armored Combat Engineer Robot (ACER), a military robot created by Mesa Robotics
- Australian Council for Educational Research, a non-governmental educational research organisation based in Camberwell, Victoria
- David Acer, stand-up comedian and Canadian close-up magician
- ACEr is used to identify a member of the American Coaster Enthusiasts.
- Acer is commonly used to refer to a person who if a fan of the group Ace of Base.
See also
- Aker ASA, the Norwegian company originally known as Aker.
