Karl Oscar Ragnar Malm (14 May 1893 – 1 March 1959) was a Swedish road racing cyclist. He competed at the 1912, 1920 and 1924 Summer Olympics and won a team gold, silver and bronze medal, respectively. His best individual result was seventh place in 1920. Nationally, he won the road time trial 10 times, individually (1912, 1917–18 and 1920–1922) and with a team (1913, 1918–1920).