Einar Nilsson (June 8, 1891 – February 1937) was a Swedish track and field athlete who competed in the 1912 Summer Olympics and in the 1920 Summer Olympics.
In 1912 he finished fourth in the two handed discus throw competition and fifth in the two handed shot put event. In the shot put event he finished seventh and in the discus throw event he finished tenth. In the decathlon competition he retired after four events and in the pentathlon competition he retired after three events.
Eight years later he finished fifth in the shot put event.