Sumay River

{{Infobox river

| name = Sumay River

| image =

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| source1_location =

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| subdivision_type1 = Country

| subdivision_name1 = Guam

| length =

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| basin_size =

| pushpin_map = Guam

| source1_coordinates= {{Coord|13.2572222|144.7013889}}

| mouth_coordinates = {{Coord|13.2463889|144.6975000|source:GNIS|display=inline,title}}

}}

The Sumay River is a river in the United States territory of Guam.{{GNIS|1390061}}