With 106 MPs in the House, Pomat collected 60 to be declared as Speaker of Parliament.
Rabaul MP Dr Allan Marat, who was also nominated for the Speaker's post, collected 46 votes.
Ialibu-Pangia MP, Peter O'Neill, thanked Pomat for his appointment and pledged to work with him for the next five years.
Governor for Manus Charlie Benjamin also commended Pomat for his appointment.
Parliament has now been suspended as the Speaker-elect will go the Government House for his swearing-in.