| Colonia Carlos Pellegrini | |
| Native Name Lang: | es |
| Settlement Type: | Municipality and town |
| Pushpin Map: | Argentina |
| Pushpin Map Caption: | Location of Colonia Carlos Pellegrini in Argentina |
| Coordinates: | -28.5372°N -57.1714°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Argentina |
| Subdivision Type1: | Province |
| Subdivision Name1: | Corrientes |
| Subdivision Type2: | Department |
| Subdivision Name2: | San Martín Department |
| Unit Pref: | Metric |
| Population Total: | 683 |
| Population As Of: | 2001 |
| Population Density Km2: | auto |
| Timezone1: | ART |
| Utc Offset1: | -3 |
| Postal Code Type: | CPA base |
| Area Code Type: | Dialing code |
Colonia Carlos Pellegrini is a small town and municipality in San Martín Department in Corrientes Province, Argentina. According to the 2001 population census conducted by INDEC its population was 683 inhabitants.[1] It was established in 1927. It is connected by road to Mercedes in the southwest.
The climate of the area is subtropical, prone to storms, with an average summer temperature of 30 °C and can fall to −2 °C at night at lowest during the winter. The average rainfall is about 2000 mm per year.
It lies within the Iberá Provincial Nature Reserve (Reserva Natural Provincial del Iberá, also known as the Iberá Wetlands), a wetland of 1,300,000 hectares on a peninsula that enters the Iberá lagoon 5,500 ha. It has diverse wildlife, including alligators, swamp deer and over 350 species of birds.