Organisation of the Polish Nation – Polish League

Organisation of the Polish Nation – Polish League (Polish: Organizacja Narodu Polskiego – Liga Polska, ONP-LP or ONP) is a Polish centre-right political party founded in 2000 that actively participated in local and parliamentary Polish elections, bringing together activists from Poland and Poles in exile. The party was created with an aim to create a common front for Polish communities abroad, providing them legal and political representation. Ideologically, the party declares to stand for and strictly adhere to "national, cultural and Christian values born out of the over a thousand-year history of the Polish State". The ONP-LP also considers itself to be based on the "Christian, agrarian, nationalist and anti-liberal" tradition. It has immigrant community clubs and cooperates with Polish diaspora organisations in Switzerland, Norway and Australia. The party participated in the 2005 Polish parliamentary election as well as the 2005 presidential election, albeit it only won a marginal number of votes. It also ran on electoral lists of nationalist parties until 2019.

The party promotes Catholic, Christian democratic and corporatist values, considering "land, resources, property, landscape, environmental, cultural values" to be an integral good and following the Catholic social teaching. In its program, the party also plans to fight "against the degeneration of the democratic system", promote Polish patriotic tradition, and to guide the Polish economy by the "national and state interest of Poland" through nationalization programs. The party also opposes abortion, and is highly supportive of Catholic media such as Radio Maryja. It also praises the interwar Sanacja regime and promotes a new Polish constitution based on the 1935 April Constitution. One of the main priorities of the party are the Polish communities and repatriates from Russia and Kazakhstan, with Organisation of the Polish Nation actively representing their interests. The ONP-LP is inspired by and claims to be a successor of the liberal democratic Polish émigré organisation Liga Polska, founded in Switzerland by Zygmunt Miłkowski following the failure of the January Uprising.