Wouter Planteijdt (born Haarlem, The Netherlands, 28 October 1957) is a Dutch singer, songwriter, guitarist and record producer, known as a key creative force of Dutch rock band Sjako! (ten studio albums since 1981).

As a session musician and/or producer Planteijdt worked with numerous artists in The Netherlands and beyond, including Paul de Munnik, Maarten van Roozendaal, Bob Fosko, The Yearlings and Hans Dulfer.

He also released three solo albums: W., Jotter's Whiffle (2001) and Bullhorn (2019). Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.