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Socialist Party is the name of many different political parties around the world. All of these parties claim to uphold some form of socialism, though they may have very different interpretations of what "socialism" means. Statistically, most of these parties advocate either democratic socialism, social democracy or even Third Way as their ideological position. Many Socialist Parties have explicit connections to the labor movement and trade unions. A number of affiliates of the Trotskyist International Socialist Alternative also use the name "Socialist Party".
This list only includes parties that use the exact name "Socialist Party" for themselves, sometimes alongside the name of the country in which they operate. The list does not include political parties that use the word "Socialist" in addition to one or more other political adjectives in their names. For example, the numerous parties using the name "Socialist Workers' Party" are not included.