| Lock Name: | Feildes Weir Lock |
| Waterway: | River Lee Navigation |
| County: | Hertfordshire |
| Operation: | Manual |
| Maint: | Canal & River Trust |
| Length: | 85feet |
| Width: | 16feet |
| Fall: | 5feet |
| Enda: | Bow Creek |
| Distenda: | 19miles |
| Endb: | Hertford Castle Weir |
| Distendb: | 7.3miles |
| Coordinates: | 51.7636°N 0.013°W |
Feildes Weir Lock (No5) is a lock on the River Lee Navigation located in Hoddesdon.
The lock is adjacent to the confluence of the River Lea and the River Stort at Feildes Weir.
The 120acres Glen Faba lake is to the east of the lock.
Vehicular access via Rattys Lane
Walking and cycle access via the towpath that forms part of the Lea Valley Walk