Llanllyfni is a small village near Penygroes in Gwynedd, North Wales.
It is a largely Welsh speaking close-knit village. About over 85% of the villagers speak Welsh as their first language.
Llanllyfni boasts of stunning views towards Dinas Dinlle, Afon Menai (Menai Straits), Ynys Mon (Anglesey) and the rest of the Nantlle Valley. The river Afon Llyfni, sometimes spelt Afon Llyfnwy, runs through the village.
Llanllyfni existed before the slate quarries opened. Llanllyfni grew bigger and bigger during the slate quarrying period.
Eglwys Sant Rhedyw (the parish church) has existed since as early as the 4th century. Here, a service is held every year on Christmas Day at 7a.m., this is a tradition that has been ongoing for hundreds of years. In Welsh, the service is called 'Plygain'. There are two other places of worship in the village - Capel Ebeneser, Felingerrig - (Baptist Chapel) and Capel Moriah (Salem) - (Methodist Chapel). The original Capel Salem chapel was closed in the early 20th century, and replaced by a smaller chapel; named Capel Moriah chapel. The larger Capel Salem chapel was eventually demolished - except for the Sunday School building. To avoid confusion, the new Capel Moriah was casually called Capel Salem by the villagers - (after the old larger chapel). As of today, the three places of worships are still open. There are five cemeteries in Llanllyfni; Mynwent Yr Eglwys - Sant Rhedyw (the oldest), Mynwent Capel Ebeneser - Felingerrig, Mynwent Capel Salem, Mynwent Bara Caws (dating back to the early 18th century) and Mynwent Gorffwysfa (the newest).
As of 2005, a local football club was set up - Clwb Pel-droed Llanllyfni Football Club. The club, popular among many villagers, sprung their way up from the basic Safelue Caernarfon & District League to the Gwynedd League. It then went on to the very respectable Welsh Alliance League in no less than four seasons of playing football on the King George the 5th playing field, situated in the middle of the village. The King George the 5th playing field is next door to the village's much used Memorial Hall.
Llanllyfni has one remaining pub - The Quarryman's Arms - or more locally known as 'Y Cwari'. The Quarryman's Arms acts as a clubhouse to the football club, and often holds evenings of entertainment. Llanllyfni once had five pubs, at least two of them (except for the Quarryman's) can be seen today, though they have been turned into houses. The King's Head was one of them.
There is one school in the village, Ysgol Gynradd Llanllyfni - a primary school. For secondary school, children have to travel less than a mile to Ysgol Dyffryn Nantlle in Penygroes. World famous Opera singer Bryn Terfel attended Ysgol Gynradd Llanllyfni, along with many other well-known people.
Some of the well-known people that have been churned out of Llanllyfni include; Mathonwy Hughes (1900's writer), Bryn Fon (Welsh singer & actor), Cefin Roberts (founder of Ysgol Glanaethwy School), Wynford Ellis Owen (writer & actor) and much more lesser known artists, poets, writers and actors.
In the 2001 census, there were about 650 people living in Llanllyfni - over 85% who could speak Welsh fluently.
Before a road was built passing the village, lorries would drive through the village to reach Porthmadog.
In addition, Llanllyfni is also 7 miles away from the well known Welsh town of Caernarfon.