|Date of birth||25 August 1970|
|Place of birth||Lemiers, Netherlands|
|Height||1.91 m (6 ft 3 in)|
|2007||New York Red Bulls||18||(0)|
* Senior club appearances and goals counted for the domestic league only and correct as of 4 October 2007 (UTC)|
‡ National team caps and goals correct as of 1 June 2004 (UTC)
Ronald Katarina Martinus Waterreus (Dutch pronunciation: [ˈroːnɑlt kaːˈtaːrinaː mɑrˈtinɵs ˈʋaːtəˌrøːs]; born 25 August 1970 in Lemiers, Limburg) is a former Dutch football goalkeeper, who most notably played for PSV Eindhoven and Rangers, before ending his career at New York Red Bulls in the Major League Soccer.
He started his career in 1992 playing for Roda JC. After joining PSV Eindhoven in 1994 he quickly established himself as one of the best goalkeepers in the Eredivisie, eventually being selected for the Dutch national squad.
After ten seasons as PSV's number one goalkeeper Waterreus transferred to Manchester City for one season. He joined SPL side Rangers in 2005 as cover for the injured Stefan Klos, however he quickly established himself as Rangers' first choice goalkeeper. He was also involved in Rangers' historic 2005-06 Champions League run where they reached the knock-out stage for the first time. Waterreus, however, eventually came under fire from Rangers fans following his criticism of the club in a Dutch newspaper, which was misinterpreted by the fans as a result of poor journalism. Waterreus left Rangers on 7 June 2006 having failed to agree a new contract.
He signed a short-term contract  with AZ Alkmaar on 4 December 2006, replacing the injured Joey Didulica and Khalid Sinouh in the month of December. In January 2007, he left the club again and agreed to move to New York Red Bulls in Major League Soccer, where he immediately established himself with three shutouts and another scoreless half to set the record for longest shutout streak to begin an MLS career.