R. rosea may refer to:
Rhodinocichla rosea, the rosy thrush-tanager, a bird species Rhodiola rosea, the golden root, roseroot or Aaron's Rod, a plant species found in cold regions of the world Rhodostethia rosea, the Ross's gull, a bird species Romulea rosea, a herbaceous perennial plant species endemic to the western Cape Province in South Africa Roseomonas rosea, a species of Gram-negative bacteria
See also Rosea (disambiguation)