Maurits Lammertink (born 31 August 1990 in Enter, Netherlands) is a Dutch cyclist, who currently rides for UCI Professional Continental team Roompot–Charles.
In 2016, he won the overall classification of the Tour de Luxembourg ahead of Philippe Gilbert and Alex Kirsch.
In June 2017, he was named in the startlist for the Tour de France.
In May 2018, he was named in the startlist for the Giro d'Italia.His younger brother Steven Lammertink is also a cyclist.