Swetha River

{{Short description|River in India}}

{{Use dmy dates|date=July 2019}}

The Swetha River ({{Langx|ta|சுவேதா ஆறு}}) is a river in India.{{Cite journal |last=Ballukraya |first=P. N. |last2=Kalimuthu |first2=R. |date=2010 |title=Quantitative hydrogeological and geomorphological analyses for groundwater potential assessment in hard rock terrains |url=https://www.jstor.org/stable/24111519 |journal=Current Science |volume=98 |issue=2 |pages=253–259 |issn=0011-3891}} It carries the drainages of Pachaimalai and Kolli Hills. It joins with Vasishta Nadi to form Vellar River and flows into the Bay of Bengal, emptying near Parangipettai.