Harmaja (disambiguation)

Harmaja is an island and a lighthouse outside Helsinki, Finland.

Harmaja may also refer to:


 * Harmaja (band), Finnish acoustic rock group
 * Harmaja (album), a self-titled album by the Finnish acoustic rock group Harmaja
 * Leo Harmaja (1880–1949), Finnish economist and Director General of the National Archives Service of Finland
 * Saima Harmaja (1913–1937), Finnish poet and writer
 * Tapani Harmaja (1917–1940), Finnish World War II pilot and writer
 * Harri Harmaja (1944–), Finnish biologist and mycologist at the University of Helsinki.