Welzel is a surname. Notable people with the surname include:
Alexandra Kertz-Welzel (born 1970), German Professor and Chair of Music Education at LMU Munich Christian Welzel (born 1964), German political scientist Heinz Welzel (1911–2002), German stage, television and film actor Martin Welzel (born 1972), German organist, musicologist, and pedagogue
See also Inglehart–Welzel cultural map of the world