KN or kn may refer to:
The Poor Fellow-Soldiers of Christ and of the Temple of Solomon (Latin: Pauperes commilitones Christi Templique Salomonici), also known as the Order of Solomon's Temple, the Knights Templar or simply the Templars, were a Catholic military order recognised in 1139 by the papal bull Omne datum optimum.
The Order of Knights of the Hospital of Saint John of Jerusalem (Latin: Ordo Fratrum Hospitalis Sancti Ioannis Hierosolymitani; Italian: Cavalieri dell'Ordine dell'Ospedale di San Giovanni di Gerusalemme), also known as the Order of Saint John, Order of Hospitallers, Knights Hospitaller, Knights Hospitalier or Hospitallers, was a medieval and early modern Catholic military order.
The Native American Party, renamed the American Party in 1855 and commonly known as the Know Nothing movement, was an American nativist political party that operated nationally in the mid-1850s.
Knoxville is a city in the U.S. state of Tennessee, and the county seat of Knox County. The city had an estimated population of 186,239 in 2016 and a population of 178,874 as of the 2010 census, making it the state's third largest city in the state after Nashville and Memphis.
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The Knights of Columbus is the world's largest Catholic fraternal service organization. Founded by Michael J.
The knapsack problem or rucksack problem is a problem in combinatorial optimization: Given a set of items, each with a weight and a value, determine the number of each item to include in a collection so that the total weight is less than or equal to a given limit and the total value is as large as possible.