Acar is a type of vegetable pickle of Maritime Southeast Asia, most prevalent in Indonesia, Malaysia, Singapore and Brunei. It is a localised version of Indian achar. It is known as atjar in Dutch cuisine, derived from Indonesian acar. Acar is usually prepared in bulk as it may easily be stored in a well-sealed glass jar in refrigerator for a week, and served as the condiment for any meals.
Acar sayur, meaning "pickled vegetables", is a general term used for this dish.