|Full name||Stanislaus Henricus Christina Valckx|
|Date of birth||20 October 1963|
|Place of birth||Arcen, Netherlands|
|Height||1.81 m (5 ft 11 1⁄2 in)|
|Playing position||Centre back|
* Senior club appearances and goals counted for the domestic league only.
After starting professionally with VVV-Venlo (second division), Valckx moved in 1988 to top flight club PSV Eindhoven, being instrumental in the conquest of three leagues and two cups – in 1991–92, he scored four goals in 28 matches, as the side renewed its domestic supremacy.
In 1992, Valckx, aged almost 29, moved abroad, to Sporting Clube de Portugal, helping the Lisbon outfit to the Portuguese Cup three years later, although he did not play in the final against C.S. Marítimo, as in January he had returned to his country and PSV, where he won one more league and another cup, before retiring in June 2000 at nearly 37 years of age, with more than 500 official games to his credit.
- Eredivisie: 1988–89, 1990–91, 1991–92, 1996–97, 1999–00
- KNVB Cup: 1988-89, 1989-90, 1995-96
- Johan Cruijff Schaal: 1996, 1997, 1998
- European Super Cup: Runner-up 1988
- Intercontinental Cup: Runner-up 1988
- Stanislaus Valckx dyrektorem sportowym Wisły (Stanislaus Valckx appointed as Wisla sporting director); Wisla Krakow's official website, 27 August 2010 (Polish)
- Beijen profile (Dutch)
- Stan Valckx at footballzz.co.uk
- Stan Valckx profile and stats at Wereld van Oranje (Dutch)
- Stan Valckx at National-Football-Teams.com