Cognomen Opet (Opet 
) , around the world, is a rare last name. The cognomen Opet is habitual in Serbia, where it is quite a rare surname, Slovakia, where it is a rare surname, and Croatia. Measured by absolute frequency, this name is the most popular in Indonesia, the United States, and Serbia. Likewise, Opet is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Opet | Serbia, France, Indonesia, United States, India |
| otto opet German jurist, DE (b. 1866) |
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| opet alatas Indonesian musician, ID (b. 1975) |
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| peter opet (b. 1972) |
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