Family name Seinstra (Seinstra 
) , all around the world, is a rare cognomen. The surname Seinstra is habitual in Netherlands, where it is quite a rare surname, and the United Kingdom, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Seinstra | United Kingdom, Netherlands |
| albert seinstra pottery painter, NL (b. 1877) |
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| taco seinstra Dutch politician, NL (b. 1941) |
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| klasina seinstra Dutch speed skater, NL (b. 1968) |
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| frank johan seinstra Ph.D. Universiteit van Amsterdam 2003 |
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| daniëlle seinstra |
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