R. lutea may refer to:
Reseda lutea, a herbaceous plant Retama lutea, a flowering bush Rhagonycha lutea, a soldier beetle Rhexia lutea, a dicotyledonous plant Rhingia lutea, a hoverfly with a long snout Rhipidarctia lutea, a Congolese moth Rosa lutea, a rose native to Georgia Roscoea lutea, a perennial plant Russula lutea, an edible mushroom