Cees Maas (born May 1, 1947, Middelburg) is a former chief financial officer and vice chairman of the executive board for ING Group. He has been with the company since 1992 and became CFO in 1996. He graduated from Erasmus University Rotterdam with a degree in physical engineering and a master's degree in economics. On 26 April 2007, Maas was made an Officer of the Order of Orange-Nassau by Queen Beatrix of the Netherlands. The honour was presented by Wouter Bos, the then Minister of Finance of the Netherlands.