Kreis Obornik (Polish: Powiat [[Oborniki|obornicki]]) was a district in Regierungsbezirk Posen in the Prussian province of Posen until 1919. Its territory presently lies in the north-western part of Polish region of Greater Poland Voivodeship.
| 1861 | |||||
| Germans | 14,849 | 41.9% | 22,351 | 47.7% | |
| Poles | 20,598 | 58.1% | 24,490 | 52.3% | |
| Total | 35,447 | 46,841 | |||
In 1905, these civil registry offices (German: Standesamt) served the following town in Kreis Obornik: