The Santa Marta montane forests (NT0159) is an ecoregion in the Sierra Nevada de Santa Marta, a massif on the Caribbean coast of northern Colombia. The ecoregion covers altitudes from near sea level up to around 3,300 metres (10,827 ft), where it gives way to Santa Marta páramo. The isolation of the massif and the range of elevations and climates has resulted in a wide variety of species including many endemics. The lower levels contained tropical rainforest, which has largely been cleared. Higher up, this gives way to cloud forest. Much of this has also been cleared for coffee plantations, pasture for sheep and cattle, and farming.

The Sierra Nevada de Santa Marta is an isolated mountain range in northern Colombia, separate from the Andes range that runs through the north of the country. Reaching an elevation of 5,700 m (18,700 ft) just 42 km (26 mi) from the Caribbean coast, the Sierra Nevada is the highest coastal range in the tropics, and one of the highest coastal ranges in the world, being 250 metres (820 ft) shorter than the Saint Elias Mountains in Canada. The Sierra Nevada encompasses about 17,000 km2 (6,600 sq mi) and serves as the source of 36 rivers. The range is in the Departments of Magdalena, Cesar and La Guajira.