Groși (Hungarian: Tőkésbánya) is a commune in Maramureș County, Romania.

It is composed of three villages: Groși, Ocoliș (Feketefalu), and Satu Nou de Jos (Alsóújfalu).

The commune lies on the banks of the Lăpuș River.

Groși is crossed by national road DN18B [ro], which runs from Cășeiu, 79 km (49 mi) to the south, to Baia Mare, 5 km (3.1 mi) to the north.

At the 2011 census, the commune had a population of 3,283 people, of which 94.71% were Romanians and 1.51% Hungarians.