Demy Patrick René de Zeeuw (Dutch pronunciation: ; born 26 May 1983) is a retired Dutch footballer and the Netherlands national football team. He is a defensive midfielder described as a good tackler and a gifted passer of the ball. He previously played for AGOVV, Go Ahead Eagles, AZ and AFC Ajax. While at AZ he was a key player in the squad that won the 2008–09 Dutch league, the club's first championship victory in 28 years. Following this success he transferred to Ajax, with whom he won the 2009–10 Dutch Cup, and the 2010–11 Dutch league title.
De Zeeuw began playing football in his hometown Apeldoorn at WSV Apeldoorn. He played there until he was twelve at which point he was scouted by Go Ahead Eagles. He played his first matches in professional football for the Deventer-based Go Ahead Eagles. In the 2001–02 season he played three league matches for the club, and went on to play five seasons for the club, playing 65 matches and scoring 7 goals. By the 2004–05 season he had established himself as an important player for the club. His performances were noticed by Eredivisie club AZ, especially after he played well during a friendly game against AZ in the summer of 2005. AZ manager Louis van Gaal was impressed by the player and he transferred to the club for 100,000 euros, signing a four-year contract.