Francis Ona (c. 1953 – 24 July 2005) was a
Bougainville secessionist leader who led an uprising against the Government of
Papua New Guinea, motivated at least initially by his concerns over the operation of the
Panguna mine by
Bougainville Copper, a subsidiary of
Rio Tinto Group. On 17 May 1990, he declared the independence of the Republic of Me'ekamui. It was not recognised internationally. Later Ona proclaimed himself "King of Me'ekamui" in May 2004.