Mecynorhina (frequently misspelled as Mecynorrhina; the original spelling used a single "r" and the misspelling is not in prevailing usage, therefore not valid under the ICZN) are beetles from the subfamily Cetoniinae, tribe Goliathini.

According to the last work of De Palma & Frantz, the type species of the genus is Scarabaeus polyphemus Fabricius, 1781.

Formerly there were three species in the genus Mecynorhina: Some authors designated ugandensis as a subspecies of torquata.

Mecynorhina oberthuri was long thought to be the rarest species in its genus, however, Jean-Pierre Lequeux discovered that it is common in the forests of Tanzania.

The most variable species is Mecynorhina ugandensis where rarely two specimens are of the same aspect.