BRE may refer to: Barren Realms Elite, a multi-player bulletin board system strategy game. Business rules engine, a software system that helps manage and execute business rules. Bachelor of Religious Education. The UK's Building Research Establishment. Breton language (SIL language code). Bustle Rack Extension, a storage bin mounted on the rear of the M1 Abrams' bustle rack to allow the crew to carry extra gear and equipment in the field. First used in Operation Iraqi Freedom. Transcriptio… (More on Bre)