| Ayer Tawar | |
| Settlement Type: | Town |
| Translit Lang1: | Other |
| Translit Lang1 Type1: | Jawi |
| Translit Lang1 Info2: | Chinese: 爱大华 |
| Translit Lang1 Type2: | Chinese |
| Pushpin Map: | Malaysia Perak#Malaysia West#Malaysia |
| Coordinates: | 4.2989°N 100.7581°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Malaysia |
| Subdivision Type1: | State |
| Subdivision Type2: | District |
| Subdivision Name2: | Manjung |
| Established Title: | Established |
| Area Total Km2: | 1.08 |
| Elevation M: | 13 |
| Population Footnotes: | [1] |
| Archive-Url: | https://web.archive.org/web/20240706214935/https://seadelt.net/Asset/Source/Document_ID-226_No-01.pdf |
| Archive-Date: | 6 July 2024[2] |
| Population Total: | 15632 |
| Population As Of: | 2000 |
| Population Density Km2: | auto |
| Demographics Type1: | Language |
| Demographics1 Title1: | Spoken |
| Timezone1: | MST |
| Utc Offset: | +8 |
| Postal Code Type: | Postcode |
| Postal Code: | 32000 |
| Demographics1 Info1: | Malay, Fuzhounese |
Ayer Tawar (Jawi: اير تاور;) is a town in Manjung District, Perak, Malaysia. Its name came from Air Tawar, which literally means "fresh water" in the Malay language.
Ayer Tawar is located on the eastern portion of Manjung District, about 60 kilometres west of the state capital Ipoh, and about 22 kilometres northeast of Lumut, where the largest Malaysian naval base is situated. Its average elevation is 13 metres above the sea level.[3]
Ayer Tawar has Tropical Rainforest Climate. It receives the least rainfall in June, with an average precipitation of 139 mm; and the most in November, with an average precipitation of 360 mm.