Surname Toornstra (Toornstra 
) , in the world, is a rare cognomen. The family name Toornstra is habitual in Netherlands, where it is a rare surname, Czechia, and New Zealand, where it is a very rare surname. Measured by absolute frequency, the name is most common in Netherlands, Czechia, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Toornstra | Netherlands, Canada, Czechia, New Zealand, United States |
| klaas toornstra Dutch politician (1894-1972), NL (b. 1894) |
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jens toornstra Dutch footballer, NL (b. 1989) |
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| annet toornstra researcher |
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