Wilhelm Ramsay, Finnish geologist and professor (born 1865)

Wilhelm Ramsay was a Finnish geologist. He became a member of the Royal Swedish Academy of Sciences in 1914 and in 1915 was accepted into the Royal Physiographic Society in Lund. He coined the terms Fennoscandia (1900) and Postjotnian (1909). Ramsay also coined the term ijolite.

January 6 is the sixth day of the year in the Gregorian calendar; 359 days remain until the end of the year.