| Sibalom River | |
| Pushpin Map: | Visayas#Philippines |
| Subdivision Type1: | Country |
| Subdivision Name1: | Philippines |
| Subdivision Type2: | Region |
| Subdivision Name2: | Western Visayas |
| Subdivision Type3: | Province |
| Subdivision Name3: | Antique |
| Subdivision Type4: | City/municipality |
| Subdivision Name4: | Sibalom |
| Source1 Location: | Central Panay Mountain Range, San Remigio, Antique. |
| Source1 Coordinates: | 10.7628°N 122.1394°W |
| Mouth: | Sulu Sea |
| Mouth Coordinates: | 10.8117°N 121.9476°W |
| Discharge1 Avg: | 40m3/s |
| Discharge1 Max: | 900m3/s |
| Tributaries Right: |
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| Bridges: | Sibalom Bridge |
The Sibalom River is the longest river in the province of Antique in Panay island Philippines. With a total length of and a drainage basin covering, it is the largest river system in Antique and fourth longest in Panay after the Panay River, Jalaur River, and Aklan River. It is located in Sibalom and San Remigio. Along with its main tributaries the Mao-it River and Tipulu-an River, it forms the 5511.47ha Tipulu-an and Mao-it River Watershed Forest Reserve (now known as Sibalom Natural Park) which was proclaimed a natural park on April 23, 2000.[1]
The Sibalom River has four main tributaries by length: the Tipulu-an River 33 km, Maninila River 31 km, Mao-it River 15.8 km and Cansilayan River 12.5 km. The river's watershed is considered one of the last remaining lowland rainforests on Panay.[2]
The tributaries of the Sibalom River by length are as follows: