| Term | Full Form | Category |
|---|---|---|
| OKU | Mokuti Lodge, Namibia | Others |
| OKU | Oldest Kids Unite | Others |
| OKU | Olin Kroch Uris Libraries | Others |
| OKU | Olin Kroch Uris Libraries (Cornell) | Others |
| OKU | Omicron Kappa Upsilon | Others |
| OKU | Orang Kurang Upaya | Others |
| OKU | Organized Killing Unit | Others |
| OKU | Osaka Kyoiku University | Others |