| Place Name | Civil Parish | Situation |
| Apple Island | Beagh | In Loughcooter, Parish of Beagh, Barony of Kiltartan and County Galway. |
| Aughinish | Kinvarradoorus | On the West of the townland Geehy North, parish Kinvarra, Barony Kiltartan and County Galway. |
| Avery Island | Moyrus | In the W. of Mason Island |
| Boghilmore | Moycullen | In Lough Corrib, N.E. of the parish |
| Brannock Islands | Arran | W. of Arranmore |
| Bush Island | Lough Mask | North East end of Lough Mask |
| Bushy Island | Clonfert | Bounded by the Shannon. |
| Castle Island | Beagh | In Lough Cooter, Parish of Beagh, Barony of Kiltartan and County Galway. |
| Clonfert Butson | Clonfert | Bounded on the N. by the River Shannon, on the E. by the River Shannon, Carty and Killmacshane on the W. by Clonfert Demesne Bog and Srahene – it is also bounded on the N. by Clonfert Demesne Bog and by Clonfert Seymour detached and on the S. by Little Abbeyland, Clonfert Demesne and Clonfert Seymour detached. |
| Coorinch | Clonfert | Bounded by the Shannon. |
| Costello's Island | Clonfert | Bounded by the Shannon. |
| Craghalan | Clonfert | Bounded by the Shannon. |
| Crappagh | Kilcummin | An island which belongs to Lettermullen. |
| Croghnut | Moyrus | In the S.W. extremity of Berterbwee Bay |
| Cruckeen Island | Kinvarradoorus | North of Doorus Demesne, parish of Kinvarra, Barony of Kiltartan and County Galway. |
| Cusheen Island | Kinvarradoorus | North East of townland Crushhooha, parish of Kinvarra, Barony of Kiltartan and County Galway. |
| Daughters Islands | Kinvarradoorus | West of the townland Mountscribic, parish of Kinvarra and Barony of Kiltartan, County Galway. |
| Dinish | Kilcummin | An island in the sea which belongs to Lettermile. |
| Dog Island | Clonfert | Bounded by the Shannon. |
| Dog Island | Kilcummin | On the South side of Lettermullen Island. |
| Fiddaun Island | Drumacoo | S.E. of Eddy island village. |
| Freaghillaunbeg | Kilcummin | In the sea, it belongs to the townland of Rossmuck. |
| Freaghillaunmore | Kilcummin | In the sea, it belongs to the townland of Russmuck. |
| Freeheen | Kilcummin | In Lough Corrib, it belongs to the townland of Carhoomore Knock, 57 chains North of the shore. |
| Friars Island | Meelick | Bounded on the N. by Big Island and on the S. W. by the River Shannon. |
| Friars Island | Tynagh | On the South end of the townland of Drimna East, S. E. of Dry Hill and W. of Goats Island, Parish of Lickmolassy, Barony of Longford. |
| Friars Island | Meelick | Bounded on the N. by Big Island and on the S. W. by the River Shannon. |
| Furnace | Kilcummin | An island in the sea, it also belongs to Lettermullen. |
| Gerralaun | Killannin | N.E. of parish in Lough Corrib. |
| Goose Island | Ballynacourty | In Lackanaboy Bay, West of Ballynacliha |
| Great Island | Clonfert | Bounded by the Shannon. |
| Illaunaknock | Moyrus | Situated N. of the townland of Collanacruck |
| Illaunaneel | Annaghdown | In Lough Corrib it belongs to Annaghdown townland. |
| Illaunaphreaghaun | Kilcummin | It belongs to the townland of Kilbricken. |
| Illaunatee [u crossed out – Illantee] | Killannin | In Lough Corrib N.E. of the parish. |
| Illaunaveel | Killannin | N.E. of the Ph. in Lough Corrib. |
| Illaunbaun | Ross Parish | Situated in the townland of Kelbeg Lower. |
| Illauncarbry | Kilcummin | In Lough Corrib, it belongs to the townland of Lemonfield. |
| Illauncosheen | Kilcummin | In the sea, it belongs to Lettermullen also. |
| Illauneeragh | Kilcummin | In the sea, it belongs to the townland of Kilbricken. |
| Illauneeragh | Kilcummin | 1 mile North of Lettrmullen Island. |
| Illaunfaddabeg | Kilcummin | In Lough Corrib, it belongs to the townland of Ardnasillagh. |
| Illaunfaddamore | Kilcummin | In Lough Corrib, it belongs to the townland of Birch Hall. |
| Illaungorm South | Moyrus | In the S.W. extremity of Berterbwee Bay |
| Illaunmore | Kilcummin | In the sea, it belongs to the townland of Kilbricken. |
| Illaun-more | Ross Parish | Situated in the townland of Kilbeg Lower. |
| Illaunmore or Knockbaan | Killannin | S. of Ross Lake |
| Illaunnacrooaghmore | Moyrus | About 2 1/3 chs. N.W. of Dhuyer townland |
| Illaunnafinnoge | Moycullen | In Lough Corrib, N.E. of the parish |
| Illaunnagowera | Kilcummin | In Lough Corrib. It belongs to the townland of Ardnasillagh. |
| Illaunnakirka | Moyrus | Situated S.W. of Innishtravin Island |
| Illaunnanoneen | Killannin | S. of Maumeen Townland in Garomna island. |
| Illaunnashinnagh | Moycullen | In Lough Corrib, N.E. of the Parish |
| Illaunnaskeagh | Moycullen | In Lough Corrib, N.E. of the parish |
| Inchaghaun | Killannin | W. of the Ph. and Lettercallow townland, W. of Lettermore Island. |
| Inchamakinna | Kilcummin | In Greatmans Bay near the shore of Kilcummin Parish. |
| Inis Oirir (Colgan) | Arran | |
| Inishbarra | Kilcummin | Close to and East of Illauneeragh. |
| Inishbigger | Moyrus | Situated N. of Moyrus townland |
| Inishconga | Cong | Situated in the townland of Dooris. |
| Inishdauwee | Kilcummin | In Lough Corrib, it belongs to the townland of Baurusheen. |
| Inisherk | Kilcummin | In the sea, it belongs to Lettermullen. |
| Inishlannaun | Kilcummin | In Lough Corrib. It belongs to the townland of Gurtnashinghaun. |
| Inishlusk | Killannin | West of the Ph.and Annaghvaan Island. |
| Inishmuskerry | Moyrus | In the sea about one mile S. of Feenish Island |
| Inishool | Kilcummin | In Lough Corrib it belongs to the townland of Portacarron. |
| Inishparran | Clonrush | In Lough Derg on the River Shannon, close by the South West side of Coolcaum Point and about 2¼ miles S. West of Whitegate. |
| Inishshanboe | Kilcummin | In Lough Corrib. It belongs to the townland of Lemonfield. |
| Inniscorra Island | Ballynacourty | W. of Lackanaboy Bay West of the parish |
| Innishcash | Kilcummin | In Lough Corrib, it belongs to the townland of Portacarron. |
| Innisheltia | Kilcummin | In the sea, it belongs to the townland of Turloughbeg. |
| Lee's Island | Killannin | N.E. of the Ph. and N.E. of Knock townland. |
| Lehinch | Clonfert | Bounded by the Shannon, West of Reisk townland. |
| Lettermullan | Kilcummin | A large island in the sea in the parish of Kilcummin. |
| Mason Island | Moyrus | In the sea about 1 1/8 ch. S. of Mace townland |
| Middle Island | Killannin | N.E. of the Ph. and S.E. of Gurtmore townland. |
| Morgan's Islands | Kinvarradoorus | North East of townland Crushhooha, parish of Kinvarra, Barony Kiltartan and County of Galway. |
| Mulroney's Island | Killeenavarra | W. of Ballycleary townland, W. of the parish |
| Mweenish Island | Ballynacourty | S. of Carhoomore townland |
| North Island | Moyrus | Situated N.W. of Innishtravin Island |
| Parsons Island | Kilbeacanty | In Lough Cooter, Parish Kilbeakanty. |
| Potatoe Island | Kilcummin | In Lough Corrib. It belongs to the townland of Curranellistruin. |
| Rabbit island | Kilcummin | In Lough Corrib. It belongs to the townland of Birchhall. |
| Red Island | Moyrus | In the N. end of Roundstone Bay |
| Rick's Island | Beagh | In Lough Cooter, parish of Beagh, Barony of Kiltartan and County Galway. |
| Roeillaun | Ballynakill in the barony of Ballynahinch | In Ballynakill Harbour, is about ½ a mile S. of Derryinver, ½ do. E of Ross, about 3 furlongs W. of Dawrusmore, and a little N. of Dawrusbeg. |
| Rossroe | Kilcummin | An island in the Great Man’s Bay. It belongs to Carhoorooa North townland. |
| Rusheenacholla | Moyrus | Situated N.W. of Minish Bay |
| Seal Islands | Kinvarradoorus | North of the townland Taunagh, Barony of Kiltartan, parish of Kinvarradoorus and County Galway. |
| St. Mac Dara's Island | Moyrus | About 1 1/8 mile S.W. of Half Mace townland |
| Straw Island | Killannin | N.E. of the Ph. and S.E. of Gurtmore townland. |
| Urkaunbeg | Kilcummin | In Lough Corrib. It belongs to the townland of Lemonfield. |
| Urkaunmore | Kilcummin | In Lough Corrib. It belongs to the townland of Lemonfield. |