| Klaas Tuinstra | |
| Birth Date: | 1945 2, df=y |
| Birth Place: | Sint Annaparochie, Niederlande |
| Death Place: | Sint Annaparochie, Netherlands |
| Nationality: | Dutch |
| Party: | ARP CDA |
| Office: | Member of the House of Representatives of the Netherlands |
| Term Start: | 1986 |
| Term End: | 1994 |
| Office2: | Member of the Provincial Council of Friesland |
| Term Start2: | 1971 |
| Term End2: | 1986 |
Klaas Tuinstra (10 February 1945 – 2 February 2022) was a Dutch politician. A member of the Anti-Revolutionary Party and later the Christian Democratic Appeal, he served in the House of Representatives from 1986 to 1994.[1] He died in Sint Annaparochie on 2 February 2022, at the age of 76.[2]