| ONTSTP-CS | |
| Location Country: | São Tomé and Príncipe |
| Affiliation: | ITUC |
| Full Name: | National Organization of the Workers of São Tomé and Príncipe - Central Union |
| Native Name: | Organizaçâo Nacional dos Trabalhadores de São Tomé and Príncipe - Central Sindical |
| Headquarters: | São Tomé, São Tomé and Príncipe |
| Key People: | João Sousa Pontes Tavares, secretary general |
The National Organization of the Workers of São Tomé and Príncipe – Central Union (ONTSTP-CS) is a national trade union center in São Tomé and Príncipe.
The ONTSTP-CS is affiliated with the International Trade Union Confederation.