Rheinfelden may refer to:
Places Rheinfelden (Baden), a town in the county of Lörrach in Baden-Württemberg, Germany Rheinfelden (Aargau), a town in the canton of Aargau, Switzerland Rheinfelden District, a district in the Swiss canton of Aargau
People Adelaide of Rheinfelden (1060s–1090), Queen Consort of Hungary Agnes of Rheinfelden (c. 1065-1111), daughter of King Rudolf of Rheinfelden Bertha of Rheinfelden (c. 1065–after 1128), countess of Kellmünz Berthold of Rheinfelden or Berthold I, Duke of Swabia (c. 1060-1099), Duke of Swabia (1737–1826), German nobleman John of Rheinfelden (c. 1340-unknown), Dominican friar and writer Rudolf of Rheinfelden (also Rudolf of Swabia) (c. 1025-1080), counter-king to Henry IV in the Holy Roman Empire
See also
Rheinsfelden, Zurich, Switzerland Reinfeld (disambiguation)