Lilius is an old Finnish family who first appeared in records in the 16th century. The earliest documented members were the Sheriff Hans Rainenius (b. 1540), who lived in Satakunta, and his son Vicar Henrik Rainenius-Lilius (1590–1657). Notable Finns with this surname include:
Henrik Lilius (1683–1745), Finnish poet fi:Henrik Lilius
Johan Lilius (1724–1803), Justice of the Hovrätt and founding member, with Henrik Gabriel Porthan, of the Aurora Society
Frans Hugo Lilius (1860–1936), Finnish senator, Minister of Justice
Frans Oskar Lilius (1871–1928), Finnish senator
Albert Lilius (1873–1947), Finnish professor of psychology at Helsinki University, pioneer in Developmental Psychology
Aleko Lilius (1890–1977), Finnish adventurer and author
Carl-Gustaf Lilius (1928–1998), Finnish painter, sculptor and author
Irmelin Sandman Lilius (1936–), Finnish-Swedish author, married to Carl-Gustaf Lilius
Henrik Lilius, (1939-) professor of art history at Helsinki University, professor of architectural history at Helsinki University of Technology and former head of The National Board of Antiquities
Mikael Lilius (1949-), former President and CEO of the Finnish energy company Fortum [1]
