Feddersen is a surname. Notable people with the surname include:
Berend Wilhelm Feddersen (1832–1918), German physicist Ditlevine Feddersen (1727–1803), Norwegian poet and translator Helga Feddersen (1930–1990), German actress, comedian and writer Joe Feddersen (born 1953), American artist Timothy Feddersen (born 1958), American economist and political scientist Victor Feddersen (born 1968), Danish rower