| IOSA Isles | ||||||
| Last revised: 17 October 2005. | ||||||
| # | Island Group | Code | Name | Permission may be required | Lat. deg N | Long. deg W |
| 001 | Clyde | CL01 | Arran | n | 55.58 | 5.25 |
| 002 | Clyde | CL02 | Bute | n | 55.83 | 5.07 |
| 003 | Clyde | CL03 | Great Cumbrae | n | 55.77 | 4.92 |
| 004 | Clyde | CL04 | Little Cumbrae | y | 55.72 | 4.95 |
| 005 | Clyde | CL05 | Ailsa Craig | y | 55.25 | 5.12 |
| 006 | Clyde | CL06 | Holy Island | y | 55.52 | 5.07 |
| 007 | Clyde | CL07 | Pladda | y | 55.43 | 5.12 |
| 008 | Clyde | CL08 | Sanda | y | 55.28 | 5.58 |
| 009 | Clyde | CL09 | Davaar | y | 55.42 | 5.54 |
| 010 | Clyde | CL10 | Inchmarnock | y | 55.79 | 5.16 |
| 011 | Clyde | CL11 | Lady Isle | y | 55.53 | 4.73 |
| 012 | Clyde | CL12 | Horse Island | y | 55.65 | 4.84 |
| 013 | Clyde | CL13 | Burnt Islands (Bute) | y | 55.93 | 5.17 |
| 014 | Clyde | CL14 | Eilean Dubh (Bute) | n | 55.93 | 5.18 |
| 015 | Firth of Lorne | FL01 | Lismore | n | 56.51 | 5.50 |
| 016 | Firth of Lorne | FL02 | Kerrera | n | 56.40 | 5.54 |
| 017 | Firth of Lorne | FL03 | Seil | n | 56.30 | 5.62 |
| 018 | Firth of Lorne | FL04 | Luing | n | 56.24 | 5.64 |
| 019 | Firth of Lorne | FL05 | Scarba | y | 56.18 | 5.71 |
| 020 | Firth of Lorne | FL06 | Garvellachs | y | 56.23 | 5.78 |
| 021 | Firth of Lorne | FL07 | Lunga | y | 56.22 | 5.70 |
| 022 | Firth of Lorne | FL08 | Shuna (E of Luing) | y | 56.22 | 5.60 |
| 023 | Firth of Lorne | FL09 | Eilean Macaskin | y | 56.13 | 5.56 |
| 024 | Firth of Lorne | FL10 | Eilean Righ | y | 56.16 | 5.54 |
| 025 | Firth of Lorne | FL11 | Eilean Mhic-Chrion | y | 56.18 | 5.54 |
| 026 | Firth of Lorne | FL12 | Shuna (NW of Appin) | y | 56.59 | 5.39 |
| 027 | Firth of Lorne | FL13 | Torsa (NE of Luing) | y | 56.26 | 5.62 |
| 028 | Firth of Lorne | FL14 | Easdale (W of Seil) | y | 56.29 | 5.66 |
| 029 | Outliers | OL01 | Flannan | y | 58.28 | 7.58 |
| 030 | Outliers | OL02 | St. Kilda | y | 57.82 | 8.58 |
| 031 | Outliers | OL03 | North Rona | y | 59.12 | 5.83 |
| 032 | Outliers | OL04 | Sula Sgeir | y | 59.10 | 6.13 |
| 033 | Firth of Forth | FF01 | Isle of May | y | 56.19 | 2.56 |
| 034 | Firth of Forth | FF02 | Bass Rock | y | 56.08 | 2.64 |
| 035 | Firth of Forth | FF03 | Craigleith | y | 56.07 | 2.71 |
| 036 | Firth of Forth | FF04 | Fidra | y | 56.07 | 2.78 |
| 037 | Firth of Forth | FF05 | Inchkeith | y | 56.03 | 3.13 |
| 038 | Firth of Forth | FF06 | Inchcolm | y | 56.03 | 3.30 |
| 039 | Firth of Forth | FF07 | Inchmickery | y | 56.01 | 3.27 |
| 040 | Firth of Forth | FF08 | Lamb Island | y | 56.07 | 2.75 |
| 041 | Firth of Forth | FF09 | Cramond Island | n | 55.99 | 3.29 |
| 042 | Solway Firth | SF01 | Hestan | y | 54.83 | 3.81 |
| 043 | Solway Firth | SF02 | Little Ross | y | 54.77 | 4.08 |
| 044 | Solway Firth | SF03 | Islands of Fleet | y | 54.82 | 4.22 |
| 045 | Solway Firth | SF04 | Murray's Island | y | 54.82 | 4.24 |
| 046 | Shetland and Fair Isle | SH01 | Mainland | n | 60.10 | 1.27 |
| 047 | Shetland and Fair Isle | SH02 | Unst | n | 60.73 | 0.87 |
| 048 | Shetland and Fair Isle | SH03 | Yell | n | 60.57 | 1.10 |
| 049 | Shetland and Fair Isle | SH04 | Fetlar | n | 60.60 | 0.87 |
| 050 | Shetland and Fair Isle | SH05 | Whalsay | n | 60.35 | 0.97 |
| 051 | Shetland and Fair Isle | SH06 | Bressay | n | 60.15 | 1.08 |
| 052 | Shetland and Fair Isle | SH07 | Foula | n | 60.13 | 2.07 |
| 053 | Shetland and Fair Isle | SH08 | Out Skerries | n | 60.42 | 0.77 |
| 054 | Shetland and Fair Isle | SH09 | Fair Isle | n | 59.54 | 1.63 |
| 055 | Shetland and Fair Isle | SH10 | Mousa | y | 60.00 | 1.17 |
| 056 | Shetland and Fair Isle | SH11 | Noss | y | 60.15 | 1.02 |
| 057 | Shetland and Fair Isle | SH12 | Vaila | y | 60.20 | 1.59 |
| 058 | Shetland and Fair Isle | SH13 | Vementry | y | 60.33 | 1.46 |
| 059 | Shetland and Fair Isle | SH14 | Papa Stour | y | 60.33 | 1.70 |
| 060 | Shetland and Fair Isle | SH15 | Hascosay | y | 60.61 | 0.99 |
| 061 | Shetland and Fair Isle | SH16 | Hildasay | y | 60.15 | 1.36 |
| 062 | Shetland and Fair Isle | SH17 | Papa Little | y | 60.33 | 1.39 |
| 063 | Shetland and Fair Isle | SH18 | Uyea (N of Mainland) | y | 60.62 | 1.43 |
| 064 | Shetland and Fair Isle | SH19 | Balta (E of Unst) | y | 60.74 | 0.79 |
| 065 | Shetland and Fair Isle | SH20 | Bigga (SW of Yell) | y | 60.49 | 1.19 |
| 066 | Shetland and Fair Isle | SH21 | Trondra (W of Mainland) | y | 60.12 | 1.29 |
| 067 | Shetland and Fair Isle | SH22 | West Burra (W of Mainland) | y | 60.09 | 1.32 |
| 068 | Shetland and Fair Isle | SH23 | East Burra (W of Mainland) | y | 60.08 | 1.31 |
| 069 | Shetland and Fair Isle | SH24 | Oxna (W of Mainland) | y | 60.12 | 1.37 |
| 070 | Shetland and Fair Isle | SH25 | Papa (W of Mainland) | y | 60.12 | 1.34 |
| 071 | Shetland and Fair Isle | SH26 | Linga (Olna Firth) | y | 60.36 | 1.36 |
| 072 | Shetland and Fair Isle | SH27 | Linga (E of Yell) | y | 60.67 | 0.98 |
| 073 | Shetland and Fair Isle | SH28 | West Linga (W of Whalsay) | y | 60.36 | 1.04 |
| 074 | Shetland and Fair Isle | SH29 | Muckle Roe (W of Mainland) | y | 60.37 | 1.42 |
| 075 | Shetland and Fair Isle | SH30 | Uyea | y | 60.67 | 0.90 |
| 076 | Orkney Islands | OR01 | Mainland | n | 58.98 | 3.08 |
| 077 | Orkney Islands | OR02 | Westray | n | 59.30 | 2.95 |
| 078 | Orkney Islands | OR03 | Papa Westray | n | 59.35 | 2.89 |
| 079 | Orkney Islands | OR04 | North Ronaldsay | n | 59.37 | 2.42 |
| 080 | Orkney Islands | OR05 | South Ronaldsay | n | 58.82 | 2.93 |
| 081 | Orkney Islands | OR06 | Hoy | n | 58.83 | 3.28 |
| 082 | Orkney Islands | OR07 | Shapinsay | n | 59.05 | 2.85 |
| 083 | Orkney Islands | OR08 | Stronsay | n | 59.12 | 2.60 |
| 084 | Orkney Islands | OR09 | Rousay | n | 59.15 | 3.03 |
| 085 | Orkney Islands | OR10 | Sanday | n | 59.25 | 2.57 |
| 086 | Orkney Islands | OR11 | Eday | n | 59.17 | 2.78 |
| 087 | Orkney Islands | OR12 | Egilsay | n | 59.16 | 2.92 |
| 088 | Orkney Islands | OR13 | Flotta | n | 58.83 | 3.12 |
| 089 | Orkney Islands | OR14 | Burray | n | 58.85 | 2.90 |
| 090 | Orkney Islands | OR15 | Swona | y | 58.74 | 3.06 |
| 091 | Orkney Islands | OR16 | Switha | y | 58.80 | 3.10 |
| 092 | Orkney Islands | OR17 | Fara | y | 58.84 | 3.17 |
| 093 | Orkney Islands | OR18 | Cava | y | 58.88 | 3.17 |
| 094 | Orkney Islands | OR19 | Copinsay | y | 58.90 | 2.67 |
| 095 | Orkney Islands | OR20 | Graemsay | n | 58.93 | 3.29 |
| 096 | Orkney Islands | OR21 | Gairsay | y | 59.08 | 2.98 |
| 097 | Orkney Islands | OR22 | Wyre | n | 59.12 | 2.97 |
| 098 | Orkney Islands | OR23 | Faray | y | 59.22 | 2.83 |
| 099 | Orkney Islands | OR24 | Eynhallow | y | 59.15 | 3.12 |
| 100 | Orkney Islands | OR25 | Auskerry | y | 59.03 | 2.57 |
| 101 | Orkney Islands | OR26 | Lamb Holm | n | 58.89 | 2.89 |
| 102 | Orkney Islands | OR27 | Glims Holm | n | 58.88 | 2.91 |
| 103 | Orkney Islands | OR28 | Hunda | y | 58.85 | 2.98 |
| 104 | Orkney Islands | OR29 | Calf of Eday (NE of Eday) | y | 59.24 | 2.73 |
| 105 | Orkney Islands | OR30 | Hellier Holm (SW of Shapinsay) | y | 59.02 | 2.90 |
| 106 | Orkney Islands | OR31 | Linga Holm (NW of Stronsay) | y | 59.13 | 2.67 |
| 107 | Orkney Islands | OR32 | Muckle Green Holm (SW of Eday) | y | 59.13 | 2.83 |
| 108 | Orkney Islands | OR33 | Holm of Scockness (E of Rousay) | y | 59.17 | 2.95 |
| 109 | Orkney Islands | OR34 | Papa Stronsay (NE of Stronsay) | y | 59.15 | 2.59 |
| 110 | Orkney Islands | OR35 | Holm of Grimbister | n | 59.03 | 3.06 |
| 111 | Orkney Islands | OR36 | Damsay | n | 59.01 | 3.06 |
| 112 | Outer Hebrides | OH01 | Lewis and Harris | n | 58.10 | 6.72 |
| 113 | Outer Hebrides | OH02 | North Uist | n | 57.60 | 7.33 |
| 114 | Outer Hebrides | OH03 | South Uist | n | 57.25 | 7.35 |
| 115 | Outer Hebrides | OH04 | Benbecula | n | 57.45 | 7.33 |
| 116 | Outer Hebrides | OH05 | Berneray (N of N Uist) | n | 57.72 | 7.18 |
| 117 | Outer Hebrides | OH06 | Monach Islands | y | 57.52 | 7.62 |
| 118 | Outer Hebrides | OH07 | Vatersay | n | 56.93 | 7.53 |
| 119 | Outer Hebrides | OH08 | Mingulay | y | 56.81 | 7.64 |
| 120 | Outer Hebrides | OH09 | Eriskay | n | 57.08 | 7.29 |
| 121 | Outer Hebrides | OH10 | Sandray | y | 56.89 | 7.52 |
| 122 | Outer Hebrides | OH11 | Barra | n | 56.98 | 7.45 |
| 123 | Outer Hebrides | OH12 | Great Bernera | n | 58.22 | 6.83 |
| 124 | Outer Hebrides | OH13 | Scarp | y | 58.02 | 7.13 |
| 125 | Outer Hebrides | OH14 | Taransay | y | 57.90 | 7.01 |
| 126 | Outer Hebrides | OH15 | Pabbay | y | 57.77 | 7.23 |
| 127 | Outer Hebrides | OH16 | South Berneray | y | 56.78 | 7.64 |
| 128 | Outer Hebrides | OH17 | South Pabbay | y | 56.85 | 7.58 |
| 129 | Outer Hebrides | OH18 | Shiant Islands | y | 57.89 | 6.36 |
| 130 | Outer Hebrides | OH19 | Boreray | y | 57.71 | 7.28 |
| 131 | Outer Hebrides | OH20 | Killegray | n | 57.74 | 7.08 |
| 132 | Outer Hebrides | OH21 | Ensay | y | 57.77 | 7.08 |
| 133 | Outer Hebrides | OH22 | Eilean Lubhard | y | 58.00 | 6.43 |
| 134 | Outer Hebrides | OH23 | Seaforth | y | 58.00 | 6.72 |
| 135 | Outer Hebrides | OH24 | Mealista | y | 58.08 | 7.13 |
| 136 | Outer Hebrides | OH25 | Scalpay (Harris) | n | 57.87 | 6.67 |
| 137 | Outer Hebrides | OH26 | Baleshare | n | 57.53 | 7.36 |
| 138 | Outer Hebrides | OH27 | Grimsay | n | 57.49 | 7.24 |
| 139 | Outer Hebrides | OH28 | Vallay (NW of N Uist) | y | 57.66 | 7.41 |
| 140 | Outer Hebrides | OH29 | Kirkibost | y | 57.56 | 7.42 |
| 141 | Outer Hebrides | OH30 | Ronay | y | 57.49 | 7.18 |
| 142 | Outer Hebrides | OH31 | Wiay (NE of S Uist) | y | 57.40 | 7.21 |
| 143 | Outer Hebrides | OH32 | Little Bernera | y | 58.27 | 6.87 |
| 144 | Outer Hebrides | OH33 | Eilean Chaluim Chille (E of Lewis) | y | 58.10 | 6.44 |
| 145 | Outer Hebrides | OH34 | Calvay (NE of Eriskay) | y | 57.09 | 7.27 |
| 146 | Outer Hebrides | OH35 | Fiaray (N of Barra) | y | 57.07 | 7.44 |
| 147 | Outer Hebrides | OH36 | Fuday (NE of Barra) | y | 57.05 | 7.39 |
| 148 | Outer Hebrides | OH37 | Fuiay (E of Barra) | y | 57.00 | 7.37 |
| 149 | Inner Hebrides | NH01 | Canna | y | 57.06 | 6.52 |
| 150 | Inner Hebrides | NH02 | Rhum | y | 57.00 | 6.32 |
| 151 | Inner Hebrides | NH03 | Eigg | y | 56.90 | 6.15 |
| 152 | Inner Hebrides | NH04 | Tiree | n | 56.50 | 6.88 |
| 153 | Inner Hebrides | NH05 | Coll | n | 56.62 | 6.57 |
| 154 | Inner Hebrides | NH06 | Muck | y | 56.83 | 6.25 |
| 155 | Inner Hebrides | NH07 | Skye | n | 57.38 | 6.30 |
| 156 | Inner Hebrides | NH08 | Ascrib Islands | y | 57.59 | 6.52 |
| 157 | Inner Hebrides | NH09 | Rona | y | 57.53 | 5.97 |
| 158 | Inner Hebrides | NH10 | Raasay | n | 57.37 | 6.03 |
| 159 | Inner Hebrides | NH11 | Pabay (Skye) | y | 57.27 | 5.86 |
| 160 | Inner Hebrides | NH12 | Crowlin Islands | y | 57.34 | 5.83 |
| 161 | Inner Hebrides | NH13 | Longay | y | 57.31 | 5.89 |
| 162 | Inner Hebrides | NH14 | Wiay (Skye) | y | 57.34 | 6.50 |
| 163 | Inner Hebrides | NH15 | Mull | n | 56.43 | 5.95 |
| 164 | Inner Hebrides | NH16 | Iona | n | 56.33 | 6.42 |
| 165 | Inner Hebrides | NH17 | Treshnish Islands | y | 56.48 | 6.42 |
| 166 | Inner Hebrides | NH18 | Ulva | y | 56.48 | 6.22 |
| 167 | Inner Hebrides | NH19 | Colonsay | n | 56.07 | 6.22 |
| 168 | Inner Hebrides | NH20 | Oronsay | y | 56.02 | 6.25 |
| 169 | Inner Hebrides | NH21 | Jura | n | 55.92 | 6.00 |
| 170 | Inner Hebrides | NH22 | Islay | n | 55.75 | 6.17 |
| 171 | Inner Hebrides | NH23 | Texa | y | 55.62 | 6.14 |
| 172 | Inner Hebrides | NH24 | Gigha | n | 55.67 | 5.75 |
| 173 | Inner Hebrides | NH25 | Cara | y | 55.63 | 5.75 |
| 174 | Inner Hebrides | NH26 | Soay | y | 57.16 | 6.19 |
| 175 | Inner Hebrides | NH27 | Little Colonsay | y | 56.45 | 6.26 |
| 176 | Inner Hebrides | NH28 | Gometra | y | 56.49 | 6.29 |
| 177 | Inner Hebrides | NH29 | Staffa | y | 56.43 | 6.34 |
| 178 | Inner Hebrides | NH30 | Scalpay (Skye) | y | 57.30 | 5.97 |
| 179 | Inner Hebrides | NH31 | Trodday | y | 57.73 | 6.30 |
| 180 | Inner Hebrides | NH32 | Fladda | y | 57.74 | 6.43 |
| 181 | Inner Hebrides | NH33 | Mingay (Skye) | y | 57.52 | 6.64 |
| 182 | Inner Hebrides | NH34 | Isay | y | 57.52 | 6.65 |
| 183 | Inner Hebrides | NH35 | Eorsa (Mull) | y | 56.47 | 6.09 |
| 184 | Inner Hebrides | NH36 | Calve Island (Mull) | y | 56.62 | 6.04 |
| 185 | Inner Hebrides | NH37 | Inch Kenneth | y | 56.44 | 6.16 |
| 186 | Inner Hebrides | NH38 | Harlosh (W of Skye) | y | 57.36 | 6.53 |
| 187 | Inner Hebrides | NH39 | Tarner (W of Skye) | y | 57.36 | 6.49 |
| 188 | Inner Hebrides | NH40 | Oronsay (SE of Skye) | y | 57.15 | 5.79 |
| 189 | Inner Hebrides | NH41 | Eilean Flodigarry (NE of Skye) | y | 57.66 | 6.23 |
| 190 | Inner Hebrides | NH42 | Staffin Islands (NE of Skye) | y | 57.64 | 6.20 |
| 191 | Inner Hebrides | NH43 | Jura Small Isles (SE of Jura) | y | 55.84 | 5.93 |
| 192 | Inner Hebrides | NH44 | Eilean Imersay (SE of Islay) | y | 55.64 | 6.09 |
| 193 | Inner Hebrides | NH45 | Orsay (Islay) (W of Islay) | y | 55.67 | 6.51 |
| 194 | Inner Hebrides | NH46 | Gigalum (SE of Gigha) | y | 55.65 | 5.74 |
| 195 | Scottish Coastal Islands | SC01 | Pentland Skerries | y | 58.69 | 2.92 |
| 196 | Scottish Coastal Islands | SC02 | Stroma | y | 58.68 | 3.12 |
| 197 | Scottish Coastal Islands | SC03 | Neave | y | 58.55 | 4.29 |
| 198 | Scottish Coastal Islands | SC04 | Eilean Nan Ron | y | 58.56 | 4.34 |
| 199 | Scottish Coastal Islands | SC05 | Rabbit Islands | y | 58.54 | 4.39 |
| 200 | Scottish Coastal Islands | SC06 | Eilean Hoan | y | 58.57 | 4.67 |
| 201 | Scottish Coastal Islands | SC07 | Handa | y | 58.38 | 5.20 |
| 202 | Scottish Coastal Islands | SC08 | Oldany | y | 58.26 | 5.26 |
| 203 | Scottish Coastal Islands | SC09 | Gruinard | y | 57.89 | 5.47 |
| 204 | Scottish Coastal Islands | SC10 | Summer Isles | y | 58.01 | 5.40 |
| 205 | Scottish Coastal Islands | SC11 | Isles of Ewe | y | 57.83 | 5.63 |
| 206 | Scottish Coastal Islands | SC12 | Eilean Horrisdale | y | 57.70 | 5.71 |
| 207 | Scottish Coastal Islands | SC13 | Longa | y | 57.73 | 5.80 |
| 208 | Scottish Coastal Islands | SC14 | Isle Martin | y | 57.95 | 5.23 |
| 209 | Scottish Coastal Islands | SC15 | Shona (Moidart) | y | 56.80 | 5.86 |
| 210 | Scottish Coastal Islands | SC16 | Oronsay (Loch Sunart) | y | 56.66 | 5.93 |
| 211 | Scottish Coastal Islands | SC17 | Carna (Loch Sunart) | y | 56.66 | 5.89 |
| 212 | Scottish Coastal Islands | SC18 | Soyea Island (W of Lochinver) | y | 58.14 | 5.32 |
| 213 | Scottish Coastal Islands | SC20 | Isle Ristol (N of Summer Isles) | y | 58.04 | 5.44 |
| 214 | Scottish Coastal Islands | SC21 | Eilean Mullagrach (N of Summer Isles) | y | 58.05 | 5.46 |
| 215 | Scottish Coastal Islands | SC22 | Eilean Ghlais (N of Summer Isles) | y | 58.03 | 5.47 |