Grunden may refer to the following: Persons with the name Per Grundén (1922–2011), Swedish singer and actor Toralf Grunden (fl. 1900s), Swedish Antarctic explorer, namesake of geologic features in Antarctica Walter E. Grunden, historiographer of the Japanese atomic program Places with the name any of several towns or villages in Germany Grunden Rock, a 15-metre-tall rock near the entrance to Hope Bay, in the Antarctic Peninsula (named for Toralf Grunden, who wintered there in 1902–03) Other uses the Danish word for brilliant