Popular Socialist Party may refer to:
- Dominican Popular Socialist Party
- Popular Socialist Party (Argentina)
- Popular Socialist Party (Brazil)
- Popular Socialist Party (Chile)
- Popular Socialist Party (Cuba)
- Popular Socialist Party (Haiti)
- Popular Socialist Party (Mexico)
- Popular Socialist Party (Spain)
- Popular Socialist Party of Mexico
- Labour Popular Socialist Party, early 20th-century Russian party
- Lithuanian Popular Socialist Democratic Party
- Praja Socialist Party (India)