Jacobus Hendrikus Bastiaan "Jaap" Spaanderman jr. (17 October 1896 in Gouda – 22 July 1985 in Laren) was a Dutch pianist, cellist, conductor and piano and conducting pedagogue.
He studied cello with Isaac Mossel and piano with Sarah Bosmans-Benedicts.
He received the Dutch Prize of Excellence twice, once as a cellist (in 1918) and once as a pianist (1920), both at the Conservatoire of Amsterdam.
In his early twenties he made two concert tours through the Dutch East Indies, present-day Indonesia.
Among the many students of Jaap Spaanderman are Bart Berman, Theo Bruins, Albert Brussee, Stanley Hoogland, Jan Marisse Huizing, Guus Janssen,[1] Hans Kox, Reinbert de Leeuw, Lucas Vis, Hans Vonk and Edo de Waart.