B. lutea may refer to:
Banisteriopsis lutea, a psychoactive plant Beatonia lutea, a South American plant Besleria lutea, a plant with small seeds Betula lutea, a birch native to eastern North America Blepharoneura lutea, a fruit fly Bomarea lutea, a plant endemic to Ecuador Borsonia lutea, a sea snail Botryosphaeria lutea, a sac fungus Brodiaea lutea, a plant native to the United States Brontypena lutea, an owlet moth Brugmansia lutea, a South American plant