Ragnvald Olafsson or Rǫgnvaldr Óláfsson may refer to:
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Ragnvald Heidumhære (fl. 9th century), possibly son of Olaf Geirstad-Alf, petty king of Vestfold
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Rǫgnvaldr Óláfsson (fl. 1164), king of Mann and the Isles
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Rǫgnvaldr Óláfsson (died 1249), king of Mann and the Isles
See also
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Rogvolod, 10th-century prince of Polotsk
{{hndis, Olafsson, Ragnvald