Lisbeth Longfrock (Sidsel Sidsærk og andre kjærringemner ) is a classical work of Norwegian literature, by the author Hans Aanrud, published in 1903. It was translated into English in 1907 by , and illustrated by Norwegian artist . Aanrud's classic novel was translated again in 1935, under the title Sidsel Longskirt: A Girl of Norway. Illustrated by the famed artists Ingri and Edgar Parin d'Aulaire, this later translation was produced by The John C. Winston Company of Philadelphia.