Surname Radsma (Radsma 
) , across the world, is a rare cognomen. The cognomen Radsma is characteristic of Netherlands, where it is a rare surname, Canada, where it is a very rare surname, and New Zealand. Measured by absolute frequency, the name is most common in Netherlands, Canada, and South Africa. Also, Radsma is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Radsma | United Kingdom, South Africa, Philippines, Canada, Netherlands |
| tjeerd jacobs radsma Dutch scientific instrument maker, NL (b. 1686) |
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| akke radsma Dutch actress, NL (b. 1922) |
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