Theydon Garnon is a village and a civil parish in the Epping Forest District, in the county of Essex, England. The Anglican parish church is dedicated to All Saints.
Theydon Garnon is very near the M25/M11 interchange, but there is no access to either motorway.
Nearby settlements include the town of Epping, the large village of Theydon Bois and the hamlets of Hobbs Cross, Theydon Mount and Fiddlers Hamlet.
The nearest station is Theydon Bois tube station.
Coordinates: 51°40′20″N 0°07′34″E / 51.6722°N 0.1261°E