Diederik David van Weel (born 28 September 1973, in Baarn) is a former Dutch field hockey player, who played 61 international matches for the Netherlands, in which he didn't score a single goal.

The defender made his debut for the Dutch on 17 August 1998 in a match against Argentina.

He played in the Dutch League for HC Bloemendaal and Laren, and was a member of the team that won the gold medal at the 2000 Summer Olympics in Sydney.

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