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 i