Frederick Jack Klaassen (born 13 November 1992) is an English-born Dutch international cricketer who plays for Kent County Cricket Club. He made his List A debut for the Netherlands against Zimbabwe on 24 June 2017, having played club cricket in England and New Zealand.
| Format | Matches | Runs | Avg | 100s/50s | Top Score | Wickets | Bowl Avg | Best Bowling | Catches/St |
| ODI | 20 | 79 | 9.87 | 0/0 | 13 | 32 | 25.40 | 3/23 | 6/– |
| T20I | 41 | 48 | 4.36 | 0/0 | 13 | 45 | 23.66 | 5/19 | 17/– |
| FC | 5 | 45 | 9.00 | 0/0 | 14* | 9 | 46.88 | 4/44 | 3/– |
| LA | 44 | 170 | 10.62 | 0/0 | 17* | 64 | 29.32 | 3/23 | 16/– |
