| Long Marston | |
|---|---|
 All Saints Church | |
  Long Marston Location within Hertfordshire | |
| OS grid reference | SP899155 |
| District | |
| Shire county | |
| Region | |
| Country | England |
| Sovereign state | United Kingdom |
| Post town | Tring |
| Postcode district | HP23 |
| Dialling code | 01296 |
| Police | Hertfordshire |
| Fire | Hertfordshire |
| Ambulance | East of England |
| UK Parliament | |
Long Marston is a small village to the north of Tring in Hertfordshire, in the Tring Rural parish council area. It is in the Borough of Dacorum, Tring West and Rural Ward. It is located roughly 5 miles east of Aylesbury and 11 miles north-west of Hemel Hempstead.