Marnix Leonard Alexander van Rij (Dutch: [ˈmɑrnɪks fɑn ˈrɛi]; born 25 October 1960) is a Dutch politician. As of 10 January 2022, Van Rij is State of Secretary for Finance in the fourth Rutte cabinet From 1999 until 2001, he was party chair of the Christian Democratic Appeal (CDA). Since 1 January 1998 he has been a partner at the professional services firm Ernst & Young. From2015 to 2019, he also served as a Senator, a part-time position in the Netherlands. As a Senator, his portfolio consisted of tax affairs, among other themes. On 15 February 2020, van Rij was appointed as the Island Governor of Sint-Eustatius. After this, Van Rij was interim party chairman for CDA from 3 April until 11 December 2021.