Worldwide, Koidula (Koidula 
) is a very rare feminine first name. Very seldom, Koidula is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Koidula | Estonia, Canada, India, United States, Venezuela |
| koidula piir Estonian chemist, EE (b. 1929) |
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| koidula sildre (b. 1930) |
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| koidula soe |
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Aidla, Lyons, Maeste, Taavoste Schonberg, Tootsov, Neville, Mamopulakos, Grauberg, and Patterson