Achlum (Dutch pronunciation: [ˈɑxlʏm]) is a village in the Waadhoeke municipality of Friesland, Netherlands.

The village has a church which dates from the 12th century and is placed atop a so-called terp mound.

Around the year 1260 there was a priory of Augustinian nuns, a part of the Lúntsjerk monastery which was destroyed in 1530.

At that time the prior in Achlum was rebuilt but in 1572 the Geuzen destroyed it again.

In 1811 a farmer from Achlum called Ulbe Piers Draisma established a mutual fire insurance.