| Official Name: | Ariguaní |
| Mapsize: | 200px |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Type2: | Department |
| Subdivision Name: | Colombia |
| Subdivision Name1: | Caribbean |
| Subdivision Name2: | Magdalena |
| Leader Title: | Mayor |
| Leader Name: | David Farelo Daza (2020-2023) |
| Established Title: | Foundation |
| Established Date: | 25 December 1901 |
| Population As Of: | 2020 est.[1] |
| Population Total: | 32758 |
| Utc Offset: | -5 |
| Website: | www.ariguani-magdalena.gov.co |
Ariguaní (pronounced as /es/) is a municipality of the Colombian Department of Magdalena. The municipality seat is the town of El Difícil. It is bordered by the municipalities of Nueva Granada, Sabanas de San Ángel, Pijiño and the Municipality of Bosconia (Department of Cesar). According to the last national census (2005), the population is 31,047 Ariguaní inhabitants, of whom 18,313 live in the urban center (El Difícil), and the remaining 12,734 live in rural areas (districts and villages).