| Name | Description | Type | |
|---|---|---|---|
| Orwell kirk session | A church court that sat within the presbytery of Kinross and the synod of Fife. | Church court | view |
| Overtown kirk session | A church court that sat within the presbytery of Hamilton and the synod of Glasgow and Ayr. | Church court | view |
| Oxnam kirk session | A church court that sat within the presbytery of Jedburgh and the synod of Merse and Teviotdale. | Church court | view |
| Oyne kirk session | A church court that sat within the presbytery of Garioch and the synod of Aberdeen. | Church court | view |