Ewald Kooiman (14 June 1938 in Wormer, North Holland – 25 January 2009 in Hurghada), was a Dutch organist.
A third recording cycle on Silbermann organs in Alsace, which Kooiman had started in April 2008 for the German label Aeolus was only partly completed at the time of his unexpected death.
Kooiman taught organ at the Vrije Universiteit in Amsterdam, as well as at the International Summer Academy for Organists in Haarlem, with a particular emphasis on the performance of J.S.
Kooiman was internationally recognized as a specialist in historically informed performance, particularly with regard to the organ works of Johann Sebastian Bach.
He published numerous books and articles on Bach performance practice and other organ-related research topics.