Mathias Collett (10 September 1708 – 24 March 1759) was a Norwegian civil servant.
Collett was born in Christiania (now Oslo), Norway.
He was the son of merchant and city captain James Collett (1687-1724) and Karen Berg (1687-1744).
He was the grandson of English-born, Norwegian merchant James Collett (1655–1727).
This Norwegian biographical article related to a government official is a stub.