Oloy

{{about||the mountains|Oloy Range}}

{{Infobox river

| name = Oloy

| image =

| image_caption =

| source1 = Confluence of Left Oloy and Right Oloy
Ush-Urekchen
Kolyma Highlands

| source1_elevation ={{convert|633|m|abbr=on}}

| mouth = Omolon

| mouth_elevation = {{convert|129|m|abbr=on}}

| mouth_coordinates = {{Coord|66.4665|159.4538|type:waterbody_region:RU|display=it}}

| progression = Omolon → {{RKolyma}}

| subdivision_type1 = Country

| subdivision_name1 = Russia

| length = {{convert|471|km|abbr=on}}

| discharge1_avg = {{convert|113|m3/s|abbr=on}}

| basin_size = {{convert|23100|km2|abbr=on}}

| pushpin_map = Russia Chukotka Autonomous Okrug

| pushpin_map_caption = Mouth location in Chukotka Autonomous Okrug

}}

The Oloy ({{langx|ru|Олой}}) is a river in Magadan Oblast in Russia, a right tributary of the Omolon (Kolyma's basin). The length of the river is {{convert|471|km|mi}}. The area of its drainage basin is {{convert|23100|km2}}.{{GVR|269472|Река Олой (в верховье Лев. Олой)}} The river flows through sparsely populated areas of Chukotka.