Rølvaag, Rølvåg or Rolvaag is a Norwegian surname. Notable people with the surname include:
Karl Rolvaag (1913–1990), American politician, son of Ole Mette Henriette Martedatter Rølvåg (born 1990), Norwegian musician Ole Edvart Rølvaag (1876–1931), American author O. E. Rolvaag House, home of Ole Edvart Sander Rølvåg (born 1990), Norwegian curler