Dalen is a word that means "the valley" in Norwegian and Swedish. It may refer to:
People Dalen Cambre (born 2001), American football player Dalen Lance (born 1983), South African actor and presenter Dalen Mmako (born 1996), South African cricketer Dalen Terry (born 2002), American basketball player Andrea Dalen (born 1992), Norwegian ice hockey player Frieda Dalen (1895–1995), Norwegian teacher Gustaf Dalén (1869–1937), Swedish physicist and businessman Olav Dalen (born 1985), Norwegian football player Sidsel Dalen (born 1969), Norwegian journalist and crime fiction writer Zale Dalen, Canadian film and television director
Places Dalen, a village and a former municipality in the northeastern Netherlands Dalen, Telemark, a village in Tokke municipality in Telemark county, Norway Dalen Church, a church in Dalen, Telemark Dalen Hotel, a historic hotel located at Dalen, Telemark Dalen, the German name for the town of Tomislavgrad in Bosnia and Herzegovina
Sport Dalen/Krokslätts FF, a football club in Mölndal, Sweden IBK Dalen, a floorball club in Umeå, Sweden HC Dalen, an ice hockey club in Jönköping, Sweden
Other Dalen Portland, a novel by Kjartan Fløgstad Dalén light, a light produced from burning of carbide gas
See also Dirck Dalens the Elder (1600–1676), Dutch painter Dirk Dalens (1657–1687), Dutch painter Van Dalen, a list of people whose name is Van Dalen