Across the world, Ongku (Ongku 
) is a rare principally male, but very infrequently feminine forename. The first name Ongku is habitual in Indonesia, where it is a very rare masculine name, and India, where it is an extremely rare gender-neutral name.
| VARIANT | COUNTRY |
|---|---|
| Ongku | India, Indonesia |
| ongku parmonangan hasibuan Indonesian politician (born 1958 in Gunungtua), ID (b. 1958) |
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| ongku p. hasibuan |
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