Around the globe, Serenus (Serenus 
, Серен 
) is a rare epicene first name. The given name Serenus is characteristic of the Democratic Republic of the Congo, where it is a rare girly name, Kyrgyzstan, where it is a rare masculine name, and Israel, where it is a rare girly name. Measured by absolute frequency, it most frequently occurs in the Democratic Republic of the Congo, India, and Tanzania. Much less frequently, Serenus is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Serenus | Democratic Republic of the Congo, India, France, United States, Tanzania |
| Серен | Ukraine, Russia, Kyrgyzstan, Kazakhstan, Armenia |
| n.vibius serenus (b. 50) |
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| serenus sammonicus Roman poet, TR (b. 200) |
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| serenus the gardener Daint (b. 250) |
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| serenus of antinouplis Ancient Greek mathematician, EG (b. 300) |
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| serenus de cressy English Benedictine monk (b. 1605) |
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serenus colburn American architect, US (b. 1871) |
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| serenus halverson American politician – Minnesota -House 1941-50 (District 11), US (b. 1873) |
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| serenus sammonicus minor ancient Roman |
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