| Kees van Ierssel | |
| Full Name: | Cornelius Claudius Henricus van Ierssel |
| Birth Date: | 6 December 1945 |
| Birth Place: | Breda, Netherlands |
| Position: | Right-back |
| Years1: | 1962–1969 |
| Clubs1: | Baronie Breda |
| Caps1: | 130 |
| Goals1: | 38 |
| Years2: | 1969–1979 |
| Clubs2: | Twente |
| Caps2: | 313 |
| Goals2: | 14 |
| Years3: | 1979–1982 |
| Clubs3: | Heracles |
| Caps3: | 82 |
| Goals3: | 6 |
| Nationalyears1: | 1973–1974 |
| Nationalteam1: | Netherlands |
| Nationalcaps1: | 6 |
| Nationalgoals1: | 0 |
| Totalcaps: | 525 |
| Totalgoals: | 58 |
Cornelius "Kees" Claudius Henricus van Ierssel (in Dutch; Flemish pronounced as /kɔrˈneːlijʏs ˈkeːs ˈklʌudijʏs ˈɦɛnrikʏs fɑn ˈiːrsəl/;[1] born 6 December 1945) is a Dutch former footballer who played as a right-back.
During his club career he played for FC Twente from 1969 to 1979.[2] He earned six caps for the Netherlands national team,[3] and was part of the squad that finished as runners-up in the 1974 FIFA World Cup.