Holskardvatnet is a lake in Vik Municipality in Vestland county, Norway. It is located just less than 100 m north of the border with Modalen Municipality. The lake is 20 km south of the village of Ortnevik in neighboring Høyanger Municipality, about 13 km southwest of the village of Arnafjord, and about 28 km southwest of the municipal center of Vikøyri. The 4.81 km2 lake is located at an elevation of 845 m above sea level. There is a dam at the northwest end of the lake.