| Conventional Long Name: | Republic of Venezuela |
| Common Name: | Venezuela |
| Status: | Unrecognized state |
| Era: | Spanish American wars of independence |
| Year Start: | 19 July 1817 |
| Year End: | 17 December 1819 |
| Event Start: | Guyana Campaign |
| Event End: | Congress of Angostura |
| P1: | Captaincy General of Venezuela |
| Flag P1: | Flag of Spain (1785-1873 and 1875-1931).svg |
| P2: | Second Republic of Venezuela |
| Flag P2: | Bandera de la Guerra a Muerte.svg |
| S1: | Gran Colombia |
| Flag S1: | Flag of the Gran Colombia.svg |
| Flag: | Flag of Venezuela |
| Image Map Caption: | The Third Republic of Venezuela |
| Common Languages: | Spanish |
| Capital: | Caracas (occupied) Angostura (de facto) |
| Government Type: | Republic |
| Leader Title1: | Supreme Commander |
| Leader Name1: | Simón Bolívar |
The Third Republic of Venezuela (es|Tercera República de Venezuela) was the reestablished Republic of Venezuela declared by Simón Bolívar in the year 1817, during the Venezuelan War of Independence. The beginning of the Third Republic of Venezuela is attributed to the period after the, during which the Republicans restored democratic institutions in Angostura. The Republic ended, after the Congress of Angostura of 1819 decreed the union of Venezuela with New Granada, to form the Republic of Gran Colombia.
Venezuela would become once again an independent Republic after its separation from Gran Colombia in 1830, with José Antonio Páez as President.