Bret or BRET may refer to:
Bret (given name), including a list of people and fictional characters with the given name Bret (surname), including a list of people with the surname List of storms named Bret Background radiation equivalent time, a unit of measurement of ionizing radiation dosage Bioluminescence resonance energy transfer, a development of Förster resonance energy transfer
See also Brett (disambiguation) Breton language Lac de Bret, a lake in Switzerland Bret v JS, a formative English contract law from 1600