One of Gaerwen's windmills
|OS grid reference|
|Sovereign state||United Kingdom|
|Senedd Cymru – Welsh Parliament|
Gaerwen (Welsh pronunciation) is a village on the island of Anglesey in the community of Llanfihangel Ysgeifiog. It is located in the south of the island 4 miles (6.4 km) west of Llanfairpwllgwyngyll and 4 miles (6.4 km) southeast of Llangefni . The A5 runs through the village, and the A55 runs just a few hundred metres north. According to the 2011 Census Gaerwen is now listed by the Office for National Statistics as Llanfihangel Ysgeifiog.[clarification needed] The population of the community is 1,551. Gaerwen and Pentre Berw, Llangaffo are trio villages.
The village gets its name from a combination of the Welsh words Caer (mutated to Gaer), meaning 'fortification', and Wen, meaning 'white'. There are no clear remains of a fort in the area, although the name was originally that of a farm in the area, before becoming the name for the entire settlement. 
There is a primary school and a football pitch in the middle of the village. There is also a fish and chip shop with a barber shop next door. A science park on the south of the A55 Junction was opened in 2018.
There is a war memorial at the heart of the village paying tribute to those who fell in both World Wars.