Willem Theo "Wim" Grothuis (born 16 December 1944) is a retired Dutch rower.

He competed at the 1972 Summer Olympics in the coxed fours, together with Evert Kroes, Jan-Willem van Woudenberg, Johan ter Haar and Kees de Korver, and finished in seventh place.

[1] His team finished ninth in this event at the 1971 European Championships.

This biographical article relating to Dutch rowing is a stub.

You can help Wikipedia by expanding it.