Rosendaël (French pronunciation: [ʁozɑ̃dal]; Dutch: Rozendaal; West Flemish: Rozendoale; French Flemish: Roozendaele; meaning "rose valley") is a former commune in the Nord department in northern France. In 1971 it was merged into Dunkirk. It currently has 18,272 inhabitants (an almost ten-fold increase since 1825) in an area of 3.97 km.

The arms of Rosendaël are blazoned : D'azur à la Rose d'Argent

Rosendaël also has its own flag, Barry of 6 gules and vert

• 
  Grandes armes de Rosendaël.
• 
  Flag of Rosendaël
• 
  Flag of Rosendaëlsur dam

• Communes of the Nord department
• Roosendael Abbey in Antwerp, Belgium
• Roosendaal, city in North Brabant, Netherlands
• Rozendaal, South Holland, town in the Netherlands
• Rozendaal, town in Gelderland, Netherlands
• Jack Rosendaal (born 1973), Dutch decathlete