The University of Lisbon and the University of Porto appear between the 201st and 300th best in the world.
The University of Aveiro and University of Minho follow, among the 400 and 500 best, and the Universidade Nova de Lisboa and the University of Coimbra, between the 500th and 600th places.
With Harvard in first place for the 20th year in a row, North American universities remain at the top of the ranking.