Holmevatnet or Holmevatn is a lake in the Setesdalsheiene area of Norway. It is located in the mountains on the border of the municipalities of Bykle in Agder county and Suldal in Rogaland county. The 4.76-square-kilometre (1.84 sq mi) lake lies just west of the lake Store Urevatn and to the northeast of the lake Blåsjø. The nearest villages are Berdalen in Bykle, about 20 kilometres (12 mi) to the east and Suldalsosen, about 30 kilometres (19 mi) to the west. The mountain Kaldafjellet lies about 6 kilometres (3.7 mi) north of the lake.