King Willem

King Willem may refer to:


 * Willem I of the Netherlands (1772–1843; (r. 1815 – 1840)), King of the Netherlands
 * Willem II of the Netherlands (1792–1849; (r. 1840 – 1849)), King of the Netherlands
 * Willem III of the Netherlands (1817–1890; (r. 1849 – 1890)), King of the Netherlands
 * Willem-Alexander of the Netherlands (born 1967; (r. 2013 – present)), King of the Netherlands