His Majesty DF Nii Okwei Kinka Dowuona VI (born Michael Nii Okwei Dowuona-Owoo, 7 November 1963-)is the Osu Mantse or King of the Ga people of Osu in the Greater Accra Region of Ghana, West Africa.
As the Paramount Chief of Osu, he is President of the Osu Traditional Council.
He was elected President of the Greater Accra Regional House of Chiefs in 2016.