Sømarkedyssen is a neolithic megalithic tomb located near Sømarke on the Danish island of Møn.
Dating back to approximately 3400 BC, the tomb consists of an octagonal chamber.
A big boulder serves as a capstone, supported by seven load-bearing stones. Leading to the burial chamber, the corridor is covered with a smaller boulder, supported by four stones, whose upper surface has more than 180 bowl-shaped carvings dating from the Bronze Age.