Diederik Boer (born 24 September 1980) is a Dutch former professional footballer who played as a goalkeeper. He spent most of his career playing for PEC Zwolle in the Eredivisie. After retirement in 2019, he is now the goalkeeping coach for the PEC Zwolle youth teams.
Career
Boer was born in Emmeloord, Netherlands. He made his professional debut on 8 March 2003, when FC Zwolle lost to Ajax 5–0. On 31 August 2014, he signed a three-year contract with Ajax to replace the departed Kenneth Vermeer as second keeper behind Jasper Cillessen. Boer is missing the little finger of his right hand, meaning he plays with only nine fingers.