Dirk Lodewijk Willem van Mierop (1876–1930), was a Dutch author, anti-militarist, magazine editor, activist, organizer, pacifist and Christian anarchist.

[2] In October 1899 he founded the Association of the International Brotherhood, (VIB) in Blaricum, which was to live according to the ideals of Christian anarchism.

The VIB initially consisted of around 20 members, including a baker, a tobacco dealer, workers from various professions and a pastor as well as their wives and children.

Some members of the VIB wanted to defend themselves with weapons, but van Mierop and Felix Ortt rejected the violent resistance.

[4][5] Van Mierop moved to Amersfoort in 1903 and founded the magazine Tegen Leugen en Geweld.

[7] In 1920, Clara Gertrud Wichmann, van Mierop and others founded the Association of Religious Anarcho-Communists (BRAC), which promoted non-violence.