Poço das Esmeraldas is a waterfall and natural swimming hole located near Resende in the state of Rio de Janeiro, Brazil. Its name — meaning "Emerald Pool" — reflects the striking color of its waters.

The site sits along a sequence of several pools and cascades, and reaching Poço das Esmeraldas means passing five or more additional pools along the way.

The AllTrails route to the falls covers roughly 3 miles with about 764 feet of elevation gain, typically taking one and a half to two hours at a moderate pace.

Some pools along the trail are easily accessible, while others require scrambling over rocks, so sturdy, non-slip footwear is recommended.

The falls are known for a relatively peaceful atmosphere, attracting families and those seeking a quieter alternative to more heavily visited sites in the area.