Benny Sophie Caroline Andrea Cederfeld de Simonsen née Treschow (1865–1952) was a Danish peace activist. She is remembered as an effective member of Danske Kvinders Fredskæde, the Danish branch of the Women's International League for Peace and Freedom (WILPF), later known as Kvindernes Internationale Liga for Fred og Frihed (KILFF). From 1931 to 1939, she was the organization's vice-president. She was an active participant at the international WILPF conferences from 1926 to 1937 as well as a member of their international committee where she dealt with the rights of minorities.