|OS grid reference|
|Sovereign state||United Kingdom|
|Fire||Mid and West Wales|
Gelli is a small settlement in the community and parish of Llawhaden, Pembrokeshire, Wales, at the confluence of the Syfynwy and Cleddau Ddu rivers. It is 3 miles (5 km) northwest of Narberth and 8 miles (13 km) east of Haverfordwest. The nearest railway station is at Clunderwen 2 miles (3 km) to the east. There was a woollen mill in Gelli that ceased production in 1938.
Gelli Bridge, immediately to the east of Gelli, spans the Syfynwy a few yards before it joins the Eastern Cleddau and is Grade II listed; it is listed twice (with different IDs and dates) because it falls within two parishes. This listed bridge is not to be confused with several other bridges in the vicinity which carry road and rail across the Eastern Cleddau and another tributary.
- "GENUKI: Llawhaden". Retrieved 28 April 2015.
- "GENUKI parish maps". Retrieved 28 April 2015.
- "Pembrokeshire Historian, 2-1966". Retrieved 28 April 2015.
- "British Listed Buildings: Gelli Bridge, Clynderwen (1997)". Retrieved 28 March 2016.
- "British Listed Buildings: Gelli Bridge (partly in Llawhaden community), Clynderwen (2004)". Retrieved 29 March 2016.
- Ordnance Survey
- "Siloam Welsh Baptist Church". Retrieved 28 April 2015.
- "Coflein: Siloam Welsh Baptist Church". Retrieved 28 April 2015.
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