Cognomen Kaastra (Kaastra 
) , in the entire world, is a rare family name. The cognomen Kaastra is characteristic of Netherlands, where it is a rare surname, Austria, and Hungary. In absolute terms, the name is most common in Netherlands, the United States, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Kaastra | Austria, Hungary, Netherlands, Canada, United States |
| roelof cornelis kaastra Botanist from Netherlands, NL (b. 1942) |
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| j. kaastra astronomer, ORCID id # 0000-0001-5540-2822 (b. 1957) |
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Mr, James, Japke, Tjerk, Nancy, Nynke, Helen, Hette, Hieke, Wijtze, Wytze, Samuel, André, Angela, Casper, Bonnie, Jelmer, Thomas, Jacob, Lucas, Linda, Gosse, Tj, Jim, Mike, Shep, Dana, John, Joel, Toni, Esther, Troy, Ilse, Megan, Sanne, Simon, Sytze, Chris, Kevin, Rhoni, Flip, and Hannah