Parish Name |
Years |
Parish Number |
County |
| Oa | 1855-1874 | 546 | Argyll |
| Oa & Kildalton | 1875-1955 | 541 | Argyll |
| Oathlaw | 315 | Angus | |
| Oban | 1855-1859 | 523/1 | Argyll |
| Ochiltree | 609 | Ayr | |
| Old Aberdeen | 1886-1913 | 168/4 | Aberdeen |
| Old Aberdeen | 1914-1930 | 168/5 | Aberdeen |
| Old Cumnock | 1855-1888 | 610 | Ayr |
| Old Cumnock | 1889-1955 | 610A | Ayr |
| Old Deer | 1855-1897 | 228 | Aberdeen |
| Old Deer | 1898-1955 | 228A | Aberdeen |
| Old Kilpatrick (or West) | 510 | Dumbarton | |
| Old Luce (Glenluce) | 894 | Wigtown | |
| Old Machar | 1855-1875 | 168/2 | Aberdeen |
| Old Machar | 1876-1885 | 168/3 | Aberdeen |
| Old Machar | 1886-1897 | 168/2 | Aberdeen |
| Old Machar | 1898-1955 | 228B | Aberdeen |
| Old Meldrum | 1855-1936 | 229 | Aberdeen |
| Old Monkland | 652 | Lanark | |
| Old Monkland-Eastern | 1855-1955 | 652/3 | Lanark |
| Old Monkland-Middle | 1855-1886 | 652/2 | Lanark |
| Old Monkland-Western | 1855-1955 | 652/1 | Lanark |
| Oldhamstocks | 714 | East Lothian | |
| Olrig | 39 | Caithness | |
| Onich & Ballachulish | 1911-1927 | 506 | Argyll |
| Onich & Ballachulish | 1928-1955 | 98B/2 | Inverness |
| Ordiquhill | 163 | Banff | |
| Ormiston | 715 | East Lothian | |
| Oronsay & Colonsay | 539/2 | Argyll | |
| Orphir | 23 | Orkney | |
| Orwell | 463 | Kinross | |
| Oxnam | 1855-1892 | 802 | Roxburgh |
| Oxnam | 1893-1955 | 802A | Roxburgh |
| Oyne | 230 | Aberdeen |