Buynovska

{{Use dmy dates|date=March 2025}}

{{Infobox river

| name = Buynovska

| image =

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| source1_location =

| mouth_location = Vacha

| mouth_coordinates = {{coord|41.6719|24.3533|display=it|region:BG_type:river}}

| progression = {{RVacha}}

| subdivision_type1 = Country

| subdivision_name1 = Bulgaria

| length =

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The Buynovska ({{langx|bg|Буйновска река}}) is a river of Plovdiv Province, Bulgaria. It is one of the source rivers of the Vacha and is joined by the Trigrad Gorge.