Wellmann is a German surname. Notable people with the surname include:
Allan Wellmann (born 1954), Guatemalan footballer Ambera Wellmann (born 1982), Canadian artist Dieter Wellmann (born 1942), German fencer Ellen Wellmann (born 1948), German middle and long-distance runner Ernst Wellmann (1904–1970), German Wehrmacht officer Paul-Heinz Wellmann (born 1952), West German middle-distance runner
See also Wellman (disambiguation)