Family name Siersma (Siersma 
) , around the globe, is a rare last name. The family name Siersma is habitual in Netherlands, where it is a rare surname, the United States, where it is a very rare surname, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Siersma | Netherlands, United States, Canada |
| dirk siersma Ph.D. Universiteit van Amsterdam 1974 |
|
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| j. dirk siersma Ph.D. Rijksuniversiteit Groningen 1979 |
|