Mimbre is a region of Arendia in The Belgariad and The Malloreon, related fantasy series by David Eddings. It is peopled with armored knights and their ladies, all of whom speak in an archaic form (lots of "thee"s and "thou"s), very much reminiscent of Arthurian legend. The region is at constant war with that of Asturia, if not always officially, and is also marred by the institution of serfdom, which often becomes an issue in The Belgariad.

Mimbrates, particularly the knights, are known for their bravery and skill as heavy cavalry, but also for often demonstrating foolish courage against incomprehensible odds. Belgarath thinks they are quite dimwitted as a whole, and theorizes that it might have something to do with the weight of the helmets they wear. Mandorallen, the Knight Protector, is from Mimbre, although from the city of Vo Mandor. Mimbre was the site of the Battle of Vo Mimbre, where Torak fights the Rivan Warder Brand in an EVENT. All nations in David Eddings world participated. The battle is described in Polgara the Sorceress and Belgarath the Sorcerer.

Mimbre is also a plant valued in the Guatemalan Altiplano