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 | Canada, Estonia, United States, Venezuela, India |
| koidula piir Estonian chemist, EE (b. 1929) |
|
|
| koidula sildre (b. 1930) |
|
|
| koidula soe |
|
Aidla, Lyons, Maeste, Taavoste Schonberg, Tootsov, Neville, Mamopulakos, Grauberg, and Patterson