普图马约河（西班牙语：Río Putumayo，葡萄牙语：Rio Içá）是南美洲亚马逊河的一条支流，成为哥伦比亚与厄瓜多尔尔或秘鲁接壤的界线。

现时普图马约河是主要的航道，基本全部河道可通航。

普图马约河两岸居民主要从事养牛业和橡胶贸易。

The Putumayo River (Spanish:Río Putumayo, Portuguese:Río Içá) is one of the tributaries of the Amazon River, west of and parallel to the Japurá River. It forms part of Colombia's border with Ecuador, as well as most of the frontier with Peru. Known as the Putumayo in the former three nations, it is called the Içá when it crosses into Brazil. The Putumayo originates from an elevation of 8,000 metres (26,000 ft) in the Andes Mountains east of the municipality of Pasto, Colombia. It empties into the Amazon River near the municipality of Santo Antônio do Içá, Brazil. Major tributaries include the Guamués River, San Miguel, Güeppí, Cumpuya, Algodón, Igara-Paraná, Yaguas, Cotuhé, and Paraná de Jacurapá rivers.