D. grandis

D. grandis may refer to:
 * Daemonorops grandis, a rattan palm species found in Asia
 * Daldinia grandis, a fungus species in the genus Daldinia
 * Deinodon grandis, a nomen dubium (may refer to Ornithomimus grandis or Aublysodon grandis)
 * Dendropanax grandis, a tree species in the genus Dendropanax found in the Caribbean
 * Dryptosauroides grandis, a dinosaur species found in India that lived during the Late Cretaceous