van de Graaf, van der Graaf or van de Graaff is a Dutch surname. Notable people with this surname include the following:
Bobbie van de Graaf (born 1944), Dutch rower
Freek van de Graaff (1944–2009), Dutch rower
J. A. van de Graaf, Dutch scholar of book design, originator of the Van de Graaf canon: see Canons of page construction
Jan van de Graaff (born 1944), Dutch rower
Peter Van de Graaff, American musician
Robert J. Van de Graaff (1901–1967), American physicist
Valerie van der Graaf (born 1992), Dutch model
Volkert van der Graaf (born 1969), Dutch environmentalist and assassin
William T. Van de Graaff (1895–1977), American football player