The golden-bellied flycatcher (Myiodynastes hemichrysus) is a passerine bird in the tyrant flycatcher family. It is an endemic resident breeder in Costa Rica and western Panama. This species is found in the canopy and at the edges of wet, epiphyte-draped mountain forests, especially near streams or clearings. It occurs at middle elevations, typically between 700 and 1850 m altitude, locally to 2300 m in the south of its restricted range. The call of the golden-bellied flycatcher is a squeaky seeeik and the dawn song is a melodious repeated tre-le-loo.