Reidar "Tippen" Dørum (3 October 1925 – 16 December 2014) was a Norwegian footballer.
Dørum played for FK Ørn Horten for fifteen seasons between 1945 and 1966, except for a hiatus of six seasons from 1950 because of illness.
He scored 250 goals in 150 official games, and became top goalscorer in the Norwegian Main League 1949-50 with twelve goals.Outside sport he worked at Karljohansverns Verft.