| Triveniganj | |
| Other Name: | Tribeniganj |
| Settlement Type: | Town |
| Pushpin Map: | India Bihar |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Bihar |
| Coordinates: | 26.128°N 86.889°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | District |
| Subdivision Name1: | Supaul |
| Unit Pref: | Metric |
| Elevation M: | 59 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Hindi, Maithli,[1] English |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code Type: | PIN |
| Postal Code: | 852139 |
| Area Code Type: | Telephone code |
| Area Code: | +91-6477 |
| Registration Plate: | BR 50 |
| Blank1 Name Sec1: | Lok Sabha constituency |
| Blank1 Info Sec1: | Supaul |
| Blank2 Name Sec1: | Vidhan Sabha constituency |
| Blank2 Info Sec1: | Triveniganj |
| Blank3 Name Sec1: | Distance from Patna |
| Blank3 Info Sec1: | [2] NE (land) |
Triveniganj is a town and a notified area in Supaul district in the state of Bihar, India. It has 27 Panchayats and 64 Revenue Villages.[3] Triveniganj is counted as a major agriculture market of Kosi zone.
Triveniganj is also among only four subdivisions in Supaul and it is also a block of Supaul.Triveniganj, a small beautiful town is surrounded by lush green fields.
Triveniganj has an average elevation of 59 metres (193 feet).
As of 2011 Triveniganj had a population of 322,734.[4] Males constitute 52%(168014) of the population and females 48%(154720). Triveniganj has an average literacy rate of 49.3%, lower than the national average of 74.04%: male literacy was 58.1%, and female literacy was 39.7%. In Triveniganj, 18.4% of the population was under 6 years of age.