Libertarianism (from , meaning "freedom"; or from , meaning "free and egalitarian") is a political philosophy and movement that upholds liberty as the highest political end. Libertarianism may also refer to:
Anarchism, an anti-authoritarian and anti-statist philosophy for which some use the term libertarianism synonymously
Civil libertarianism, a strain of political thought that emphasizes the supremacy of individual rights and personal freedoms over and against any kind of authority
Left-libertarianism, a position contrasted with that of right-libertarianism which rejects the private ownership of natural resources
Libertarian socialism, a group of philosophies which aspire to create a non-hierarchical society without private ownership of the means of production or an authoritarian state
Propertarianism/Right-libertarianism, a position contrasted with that of left-libertarianism for its explicit support of free-market capitalism and private property rights