Ulf Ragnar Ling-Vannerus (born 26 May 1929) is a Swedish officer and fencer.
Ling-Vannérus was promoted to ryttmästare in the cavalry in 1966 and served as company commander in the Swedish UN battalion in Cyprus, part of the United Nations Peacekeeping Force in Cyprus, from 1966 to 1967.
Back in Sweden, he served as head of ground operations at the staff of the Western Military District from 1967 to 1971 and as head of Section 1 in the staff of the Upper Norrland Military District from 1971 to 1973.
He served as deputy commander of Norrbotten Regiment from 1973 to 1976 and as defence attaché in Washington, D.C. and Ottawa from 1976 to 1980.
Ling-Vannérus was then head of the Swedish special unit for disaster relief (Swedrelief) from 1990 to 1996.