B. grandis

B. grandis may refer to:
 * Baeckea grandis, a shrub species in the genus Baeckea
 * Banksia grandis, the bull banksia, giant banksia or mangite, a common and distinctive tree species found in South West Western Australia
 * Beishanlong grandis, a giant ornithomimosaurian dinosaur from the Early Cretaceous of China
 * Boehmeria grandis, a flowering plant species in the genus Boehmeria
 * Buchenavia grandis, a plant species in the genus Buchenavia