| Sjaak Polak | |
| Height: | 1.70 m |
| Birth Date: | 1976 2, df=yes |
| Birth Place: | The Hague, Netherlands |
| Currentclub: | Lisse (head coach) |
| Position: | Left-back |
| Youthclubs1: | ADO Den Haag |
| Years1: | 1995–1996 |
| Years2: | 1996–2001 |
| Caps2: | 132 |
| Goals2: | 17 |
| Years3: | 2001–2004 |
| Clubs3: | Twente |
| Caps3: | 92 |
| Goals3: | 12 |
| Years4: | 2004–2005 |
| Clubs4: | ADO Den Haag |
| Caps4: | 34 |
| Goals4: | 5 |
| Years5: | 2005–2008 |
| Clubs5: | Sparta Rotterdam |
| Caps5: | 80 |
| Goals5: | 14 |
| Years6: | 2008–2010 |
| Clubs6: | Veendam |
| Caps6: | 33 |
| Goals6: | 6 |
| Years7: | 2009–2010 |
| Clubs7: | → RBC Roosendaal (loan) |
| Caps7: | 21 |
| Goals7: | 5 |
| Years8: | 2010–2012 |
| Clubs8: | SVV Scheveningen |
| Years9: | 2012–2013 |
| Clubs9: | Texas Dutch Lions |
| Caps9: | 13 |
| Goals9: | 2 |
| Manageryears1: | 2012–2014 |
| Managerclubs1: | RSV Hoekpolder |
| Manageryears2: | 2014–2016 |
| Managerclubs2: | Quick Boys II |
| Manageryears3: | 2016–2017 |
| Managerclubs3: | RKSV GDA |
| Manageryears4: | 2017–2019 |
| Managerclubs4: | SJC |
| Manageryears5: | 2023– |
| Managerclubs5: | Lisse |
Sjaak Polak (born 18 February 1976) is a Dutch professional football manager and former player who is the head coach of Tweede Divisie club Lisse.
An outspoken wingback and freekick specialist, Polak previously played for Excelsior, Twente, and ADO Den Haag. In May 2008, Sparta announced that they would not extend his contract.[1] He joined Twente in January 2001 and went on to pick up a winner's medal when Twente won the 2001 KNVB Cup after a penalty shoot-out (in which he scored).
After that, Sjaak had several trials, in Austria for example with Austria Vienna and with Swiss club St. Gallen, but without success.[2] He ended up in Israel on trial with Maccabi Tel Aviv. Maccabi was interested in Polak's services because of Jewish descent [3]), and would not count as a foreigner for the club, thanks to the Israeli Law of Return.[4] Polak had trouble getting the necessary documentation proving his family's Jewish origins and when he was told that he would be asked to give up his Dutch citizenship, he decided to sign for BV Veendam back in his native the Netherlands.[5]
After ending his career in 2012, Polak started his coaching career and was appointed as manager for four-division team RSV Hoekpolder.[6]
In April 2014, Polak was appointed as manager for the reserve team of Quick Boys for the upcoming season.[7] He stayed at the club for two seasons, before he was appointed at RKSV GDA.[8] In November 2016, he was appointed manager of VV SJC for the 2017/18 season which meant, that he would continue at RKSV GDA until the end of the season.[9] Due to disappointing results, Polak was fired on 23 April 2019.[10]
In October 2023, Polak was appointed new head coach of Tweede Divisie club Lisse.[11] In February 2024, despite disappointing results, he extended his contract with the club until 2025.[12]
Twente