| Honorific-Prefix: | Yang Berhormat Senator Dato' |
| Ajis Sitin | |
| Native Name: | عزيز سيتين |
| Office: | Senator |
| Term Start: | 25 August 2021 |
| Alongside: | Juhanis Abdul Aziz |
| Office2: | Director-General of Department of Orang Asli Development |
| Term Start2: | 2017 |
| Term End2: | 2019 |
| Predecessor2: | Mohd Jamalludin Kasbi |
| Successor2: | Juli Edo |
| Birth Name: | Ajis bin Sitin |
| Birth Date: | 8 April 1963 |
| Birth Place: | Kuala Koyan, Kuala Lipis, Pahang, Federation of Malaya |
| Party: | United Malays National Organisation |
| Otherparty: | Barisan Nasional |
| Nationality: | Malaysian |
| Predecessor: | Siti Fatimah Yahaya |
| Primeminister: | Ismail Sabri Yaakob Anwar Ibrahim |
Ajis bin Sitin (born 8 April 1963) is a Malaysian civil servant who has served as the Director-General of Department of Orang Asli Development from 2017 to 2019.[1] [2] He was appointed as a Senator on 25 August 2021 to represent Pahang.[3]