| Secular Democratic Front | |
| Native Name: | ধর্মনিরপেক্ষ গণতান্ত্রিক মোর্চা (Bengali) দলবোকজাক্যা লুকুফান বেশকাং (Kokborok) |
| Country: | India |
| Abbreviation: | SDF |
| Position: | Left-wing |
| Seats1 Title: | Lok Sabha |
| Seats2 Title: | Rajya Sabha |
| Seats3 Title: | Tripura Legislative Assembly |
| Seats4 Title: | Tripura Tribal Areas Autonomous District Council |
| Seats5 Title: | Gram Panchayats |
| Seats5: | [1] |
| Seats6 Title: | Panchayat Samitis |
| Seats6: | [2] |
| Seats7 Title: | Zilla Parishads |
| Seats7: | [3] |
| Seats8 Title: | Municipalities |
| Colours: | Red |
| Native Name Lang: | bn |
| Leader: | Jitendra Chaudhury |
| Leader1 Title: | Lok Sabha Leader |
| Leader2 Title: | Rajya Sabha Leader |
| National: | Indian National Developmental Inclusive Alliance |
| Logo Upright: | 1.15 |
The Secular Democratic Front or Mahajot or Left-Congress Alliance an opposition front and an electoral understanding of secular political parties in Tripura, India consisting of the Left Front (Tripura) and the Indian National Congress formed before the 2023 Tripura Legislative Assembly election with the objective of defeating the incumbent Bharatiya Janata Party in the upcoming elections.[4] [5] The main parties in this coalition are the Communist Party of India (Marxist) and the Indian National Congress along with other minor parties in the Left Front (Tripura).[6] [7] The front failed to win the elections and meet their objective. This is currently the official opposition in Tripura Legislative Assembly.[8]