Ivan Ruben (12 August 1917 – 2 February 1986) was a Danish fencer. He competed at the 1948 and 1952 Summer Olympics held in London and Helsinki respectively. References 1917 births 1986 deaths Danish male fencers Olympic fencers of Denmark Fencers at the 1948 Summer Olympics Fencers at the 1952 Summer Olympics Sportspeople from Copenhagen