The Northern Royal Flycatcher (Onychorhynchus mexicanus) is a species of bird in the Tyrannidae family. It is, together with O. occidentalis and O. swainsoni, often considered a subspecies of O. coronatus.
It is found in Mexico, south through most of Central America, to north-western Colombia and far western Venezuela Its natural habitat is subtropical or tropical moist lowland forests.
The Northern Royal Flycatcher is 16.5-18 cm (6½-7") long, brown above small buffy spots on its wing-coverts; the rump and tail are tawny-ochraceous in colour. The bill is long and broad.
The Royal Flycatcher has an erectile fan-shaped crest, coloured red in the male and yellow-orange in the female. The display with the crest fully raised is seen extremely rarely, except during banding sessions.
The Northern Royal Flycatcher is usually inconspicious and quiet, but sometimes gives a repeated sharp clear pree-o or key-up, sounding rather like a Manacus manakin or a jacamar.