| Place Name | Civil Parish | Situation |
| (2 fields in Castle Kelly demesne) | Athleague | There are two fields situated nearly in the centre of Castle Kelly demesne, and about 44 chains west by north of Castle Kelly house. |
| (a field in Castle Kelly Demesne) | Athleague | It is situated in the northern part of Castle Kelly demesne and is bounded on the north by Lower Lisdoo, on the east by Table Rock, and on the south by Cullean Fadda and is about 30 chains north by west of Castle Kelly house. |
| Aircin | Arran | In Killainy townland. |
| Angloragh Castle | Tuam Parish | In S.E. corner of the townland of Augloragh in N. bank of river. |
| Ard Castle Ruins | Moyrus | In the N. end of Ard East townland |
| Aughnanure Castle | Kilcummin | In Aughnanure townland. |
| Aylle Old Castle | Kilteskill | S. part of Aylle in a wood. |
| Ballagh Old Castle | Clontuskert | It is situated in the townland of Ballagh West within 2½ chains S. West of the road and mearing of Tristraan with this townland. It is situated in the Barony of Cloonmacnoon. |
| Ballinderry Castle | Cummer | In Ballinderry townland. |
| Ballindooly Castle | Oranmore | In Ballindooly townland close to Ballindooly Lough. |
| Ballinduff Castle | Kilcoona | Situated near the Lodge offices and c of Ballinduff in townland Ballinduff. |
| Ballintemple | Killeenadeema | In the townland of Killeenadeema East. |
| Ballybrit Castle | St. Nicholas | Central of Ballybrit townland, E. of parish. Not occupied. |
| Ballycoona Old Castle | Killeenadeema | In the townland of Ballycoona. |
| Ballydonnellan Castle | Killallaghtan | Is situated in the West of Ballydonnellan East. |
| Ballydoogan Castle | Kilmeen | Ballydoogan. Leitrim [Barony]. |
| Ballylee Old Castle | Kiltartan | In the townland of Ballylee, parish of Kiltartan and County Galway. |
| Ballynabannaba Old Castle | Fohanagh | Situated in the South of Ballynabannaba townland. |
| Ballynakill Old Castle | Ballinakill in Leitrim Barony | In the South West end of the townland of Ballynakill about 1 mile E. N.E. of Marble Hill House. |
| Barna Old Castle | Rahoon | S. of the parish and Barna townland on the sea shore S.E. of Barna House at the corner of orchard. |
| Barnadarrig Castle Ruins | Killererin | W. of the road passing through Barnadarrig townland. |
| Cargans Castle | Cargin | Situated in the townland of Cargans. |
| Cashlaunnagransha | Lackagh | Close by the northern boundary of Grange E. |
| Cashlaunnaveacul | Belclare | Situated on the townland of Tubberminna. |
| Castle Ffrench | Killosolan | It is situated in Eastern side of Castle Ffrench townland. |
| Castle Roger | Kilgerrill | This ruin is situated in the townland of Killurebeg within about 12 chains East of this mearing of Fair Field with this townland. |
| Castle Ruins | Clonbern | In the N.E. end of Lerhan townland |
| Castle Ruins | Clonbern | In the corner of Park N. townland. |
| Castle Ruins | Dunmore Parish | E. of the townland of Castle. |
| Castle Taylor | Ardrahan | In the townland Castle Taylor South, Parish of Ardrahan, Barony of Kiltartan and Co. Galway. |
| Castlegar (In ruins) | Killeely | S. of Castlegar townland. |
| Castlegar Castle | St. Nicholas | At the village of Castlegar in townland of same name. Not occupied. |
| Castlehacket old castle | Killower | Situated in the townland of Castlehacket. |
| Castlekirk | Cong | Situated in the townland of Drimsnav. |
| Castlereagh | Dunmore Parish | N. side of Stripe townland and on the parish boundary. |
| Cloastoken Old Castle | Kilconickny | The townland of Cloastoken. |
| Cloastoken Old Castle | Kilconickny | The Western boundary of the townland of Knockadadmore. |
| Cloghballymore Castle (in ruins) | Killeenavarra | In Cloghballymore townland. |