Holmavatnet is a lake the Setesdalsheiene mountains of Southern Norway. It is located on the border of Suldal Municipality (in Rogaland county), Vinje Municipality (in Telemark county), and a small part in Bykle Municipality (in Agder county). The southeastern corner of the lake is in Bykle, and it is the northernmost part of all of Agder county. The lake Skyvatn is located about to the south of the lake.
The lake lies in a very isolated area with road access only from the village of Nesflaten in Suldal Municipality, about to the southwest. The other villages that are located near the lake are Hovden in Bykle Municipality, about to the southeast, HÃÂ¥ra in Ullensvang Municipality (Vestland county) about to the northwest, and Edland in Vinje Municipality, about to the northeast.