| Agency Name: | Ministry of Water Supply |
| Type: | Ministry |
| Nativename: | Sinhala; Sinhalese: ජලසම්පාදන අමාත්යාංශය Tamil: நீர்வழங்கல் அமைச்சு |
| Seal: | Emblem of Sri Lanka.svg |
| Formed: | 2007 |
| Preceding6: | --> |
| Jurisdiction: | Government of Sri Lanka |
| Headquarters: | Lakdiya Medura, 35 New Parliament road, Pelawatta, Battaramulla |
| Coordinates: | 6.8906°N 79.9262°W |
| Budget: | LKR 35.4 billion |
| Minister1 Name: | Jeevan Thondaman[1] |
| Minister1 Pfo: | Minister of Water Supply |
| Minister7 Name: | --> |
| Deputyminister7 Name: | --> |
| Chief1 Name: | Dr.(Eng.) Priyath B.Wickrama[2] |
| Chief1 Position: | Ministry Secretary |
| Child1 Agency: | National Water Supply and Drainage Board |
| Child2 Agency: | Department of National Community Water Supply |
| Keydocument6: | --> |
The Ministry of Water Supply[3] (si|ජලසම්පාදන අමාත්යාංශය|translit=jalasampādana amātyāṁśaya; ta|நீர்வழங்கல் அமைச்சு|translit=Nīrvaḻaṅkal amaiccu) is a cabinet ministry of the Government of Sri Lanka responsible for the supply of water and maintenance of water and sanitation infrastructure.
| Post: | Minister of Water Supply |
| Insignia: | Emblem of Sri Lanka.svg |
| Insigniasize: | 50 |
| Incumbent: | Jeevan Thondaman |
| Incumbentsince: | 19 Jan 2023 |
| Appointer: | The President |
| Formation: | 12 August 2020 |
| Name | Party | Tenure | President | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| !align="centre" style="background:; color:white;" | 23 April 2010 - 9 January 2015 | !align="center" style="background:; color:white;" | Mahinda Rajapaksa | |||||||||||
| !align="centre" style="background:; color:white;" | 12 January 2015 - 15 November 2019 | !align="center" style="background:; color:white;" | Maithripala Sirisena | |||||||||||
| !align="center" style="background:; color:white;" | Mahinda Rajapaksa | Sri Lanka Podujana Peramuna | 22 November 2019 - 12 August 2020 | !align="center" style="background:; color:white;" | Gotabaya Rajapaksa | |||||||||
| !align="center" style="background:; color:white;" | Vasudeva Nanayakkara | Democratic Left Front | 12 August 2020 - | !align="center" style="background:; color:white;" | Gotabaya Rajapaksa | |||||||||
| !align="center" style="background:; color:white;" | Keheliya Rambukwella | Sri Lanka Podujana Peramuna | 23 May 2022 - 19 January 2023 | !align="center" style="background:; color:white;" | Gotabaya Rajapaksa | |||||||||
| !align="center" style="background:; color:white;" | Jeevan Thondaman | Ceylon Workers' Congress | 19 January 2023 - current | !align="center" style="background:; color:white;" | Ranil Wickramasinghe | |||||||||