R. grandis

R. grandis may refer to:
 * Rangea grandis, a frond-like fossil from the Precambrian era
 * Rhagio grandis, a predatory snipe fly species in the genus Rhagio
 * Richeria grandis, the bois bande, a tree species found in the Caribbean Islands
 * Rhabdornis grandis, the long-billed creeper, long-billed rhabdornis or grand rhabdornis, a bird species endemic to Luzon Island in the Philippines

Synonyms

 * Rhinophis grandis, a synonym for Uropeltis smithi, a snake species found in India