Almenum is a historic locality in the northern Netherlands, near Midlum, Friesland the site of the first Christian church in Friesland. Saint Boniface set up a local church in the locality in 754. The location of the church is on the Terp of Almenum, a mound of earth about five meters high. Almenum is named after the place where someone called "Allaman" lived. The -um suffix is derived from the West Frisian word "hiem" meaning "home". An alternative explanation for the name of the locality is that it originally meant common lands for grazing cattle. In Icelandic this kind of land still uses the term "almenningurheim".