Jon Gundersen Hol (1 September 1851 – 1941) was a Norwegian engineer and activist. He is known for his pamphlet
Rifleringen, published in February 1884, that resulted in his arrest for
lèse majesté. In the pamphlet, he called for soldiers and civilians to arm themselves and encircle the
Parliament of Norway Building, creating a "Ring of Rifles", should the need arise. The political situation in Norway at the time was unstable, with an ongoing
impeachment case against the conservative government started by political liberals.
King Oscar II of Sweden and Norway supported the conservative politicians, and Hol believed that a political and military counter-offensive was planned, hence the need for guarding the Parliament. The tensions between liberals and conservatives drew Hol into politics in the first place in 1880. Before this, he was an engineer by occupation and a writer, albeit apolitical. He increased his writing after 1880, and also involved himself in non-socialist
trade unions, including the unsuccessful attempt of establishing a
national trade union center in
Kristiania.