| Honorific-Prefix: | Honourable |
| Rubi Kumari Karn | |
| Native Name: | रुवी कुमारी कर्ण |
| Native Name Lang: | ne |
| Office: | State Minister for Internal Affairs and Law of Madhesh Province |
| Alongside: | Saroj Kumar Singh |
| Governor: | |
| Predecessor: | Assembly created |
| Nationality: | Nepalese |
| Party: | CPN (Maoist Centre) |
| Residence: | Khadak, Saptari |
| Occupation: | Politician |
| Office1: | Province Assembly Member of Madhesh Province |
| Predecessor1: | Assembly created |
| Termstart: | 1 March 2018 |
| Termstart1: | 2017 |
| Constituency1: | Proportional representation |
| Minister: | Bharat Prasad Sah |
| 1Blankname: | Chief minister |
| 1Namedata: | Lalbabu Raut |
Rubi Kumari Karn (Nepali: रुवी कुमारी कर्ण)[1] is a Nepalese politician who is elected member of Provincial Assembly of Madhesh Province from CPN (Maoist Centre).[2] Karn is a resident of Khadak, Saptari.