Socialist Party is the name of many different political parties around the world. The list of parties using the exact name "Socialist Party" is to be found in the Socialist Party article.
Socialist Party may also refer to the wide variety of political parties that use the word "Socialist" in their names, often in conjunction with other adjectives and political labels. What follows is an incomplete alphabetical list of such parties:
Socialism is an economic and political philosophy encompassing diverse economic and social systems characterised by social ownership of the means of production, as opposed to private ownership. It describes the economic, political, and social theories and movements associated with the implementation of such systems. Social ownership can take various forms, including public, community, collective, cooperative, or employee. As one of the main ideologies on the political spectrum, socialism is the standard left-wing ideology in most countries. Types of socialism vary based on the role of markets and planning in resource allocation, and the structure of management in organizations.
Socialist systems are divided into non-market and market forms. A non-market socialist system seeks to eliminate the perceived inefficiencies, irrationalities, unpredictability, and crises that socialists traditionally associate with capital accumulation and the profit system. Market socialism retains the use of monetary prices, factor markets and sometimes the profit motive. As a political force, socialist parties and ideas exercise varying degrees of power and influence, heading national governments in several countries. Socialist politics have been internationalist and nationalist; organised through political parties and opposed to party politics; at times overlapping with trade unions and other times independent and critical of them, and present in industrialised and developing nations. Social democracy originated within the socialist movement, supporting economic and social interventions to promote social justice. While retaining socialism as a long-term goal, in the post-war period social democracy embraced a mixed economy based on Keynesianism within a predominantly developed capitalist market economy and liberal democratic polity that expands state intervention to include income redistribution, regulation, and a welfare state.
Socialism has been mentioned in several liberal democratic constitutions. It is referenced either in the form of denunciation (as is the case in the Croatian, Hungarian and Polish constitutions) or in form of construction, namely that the constitution of the state in question proclaim that it seeks to establish a socialist society (Bangladesh, India, Guyana and Portugal being examples). In these cases, the intended meaning of the term socialism can vary widely and sometimes the constitutional references to socialism are left over from a previous period in the country's history.
With the exceptions of Bangladesh, India, Guyana, Portugal, and Sri Lanka, references to socialism were introduced by Marxist–Leninist communist parties (sometimes in collaboration with more moderate socialist parties). In India, it is used in relation to secularism. In Sri Lanka, socialist terms were introduced by the United National Party. Tanzania considers itself to be a socialist state, having previously been a one-party state led by the Party of the Revolution (which has been in power since independence). Croatia, Hungary and Poland have references to socialism in the form of rejection of their own past communist state.