First name Sjaak
1. Sjaak Brinkkemper (1958)
Dutch Computer Scientist
Jacobus Nicolaas Brinkkemper is a Dutch computer scientist and Full Professor of organisation and information at the Department of Information and Computing Sciences of Utrecht University.
2. Sjaak Lettinga (1982)
Dutch Footballer
Sjaak Lettinga is a Dutch professional footballer who currently plays as a midfielder for Telstar in the Dutch Eerste Divisie. He formerly played for FC Volendam and Helmond Sport.
3. Sjaak Lucassen (1961)
Long-distance Motorcycle Rider
Sjaak Lucassen is a Dutch long-distance motorcycle rider.
4. Sjaak Pieters (1957)
Dutch Cyclist
Klaas Pieter Sjaak Pieters is a retired Dutch track cyclist who was active between 1976 and 1985. He competed at the 1976 Summer Olympics in the sprint but failed to...
5. Sjaak Polak (1976)
Dutch Footballer
Sjaak Polak is a Dutch former footballer.
6. Sjaak Troost (1959)
Dutch Football Player/director
Jacob Sjaak Troost is a Dutch retired footballer who played as a defender.