Ragnar may refer to:
- Ragnar Benson, author on survivalist topics
- Ragnar Lodbrok, semi-legendary king of Sweden in the eighth or ninth century
- Ragnar Frisch, economist
- Ragnar Skancke, executed Norwegian politician
- Ragnar Tørnquist, Norwegian game designer
- Ragnar, Washington, former town in Washington State, USA, known as the home of the 'Ragnar Gold Ghost' legend
- Ragnar Redbeard, the possibly pseudonymous author of Might is Right
- Ragnar Relay Series, series of distance relay races
Read more about Ragnar: In Fiction