| Type: | Elected |
| On Ting | |
| Nativename: | 安定 |
| Year: | 1994 |
| Parl Name: | Tuen Mun District Council |
| Member: | Kong Fung-yi (ADPL) |
| Map1: | OnTing |
| Map Entity: | Tuen Mun District |
| Map Size: | 250px |
| Region Label: | Legislative Council constituency |
| Region: | New Territories North West |
| District: | Tuen Mun |
| Population: | 15,819 (2019)[1] |
| Elects Howmany: | One |
| Electorate: | 10,705 (2019)[2] |
On Ting is one of the 31 constituencies in the Tuen Mun District.
Created for the 1994 District Board elections, the constituency returns one district councillor to the Tuen Mun District Council, with an election every four years.
On Ting loosely covers areas surrounding On Ting Estate and part of Siu Lun Court in Tuen Mun with an estimated population of 15,819.