St Martin's, Isles of Scilly
| St Martin's 
 | |
|---|---|
| The north coast | |
| Location within Isles of Scilly | |
| Population | 135 (2021) | 
| OS grid reference | SV 925 159 | 
| Civil parish | 
 | 
| Unitary authority | |
| Ceremonial county | |
| Region | |
| Country | England | 
| Sovereign state | United Kingdom | 
| Post town | ISLES OF SCILLY | 
| Postcode district | TR25 | 
| Dialling code | 01720 | 
| Police | Devon and Cornwall | 
| Fire | Isles of Scilly | 
| Ambulance | South Western | 
| UK Parliament | |
St Martin's (Cornish: Breghyek, lit. 'dappled island') is the northernmost populated island of the Isles of Scilly, England, United Kingdom. It has an area of 237 hectares (0.92 sq mi) and a total population (2021 census) of 135.