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Worldwide, Rehenu (Rehenu
) is a rare largely boy's, but infrequently female given name. The first name Rehenu is characteristic of Southern Asia, particularly Sri Lanka, where it is a rare masculine name, and India, where it is an extremely rare mostly female, but uncommonly male name.
| VARIANT | COUNTRY |
|---|---|
| Rehenu | India, Malaysia, Sri Lanka |
Bibi, Mannapperuma, Siriwardana, and Pathiranage