| Rasra | |
| Other Name: | Chhoti Kaashi |
| Nickname: | Nath Nagari |
| Pushpin Map: | India Uttar Pradesh |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location in Uttar Pradesh, India |
| Coordinates: | 25.85°N 83.85°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Uttar Pradesh |
| Subdivision Type2: | Division |
| Subdivision Name2: | Azamgarh |
| Subdivision Type3: | District |
| Subdivision Name3: | Ballia |
| Established Date: | 1896 |
| Area Code: | 05491 |
| Area Total Km2: | 19 |
| Elevation M: | 70 |
| Population Total: | 29,263 |
| Population As Of: | 2019 |
| Population Density Km2: | auto |
| Demographics Type1: | Language |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Hindi |
| Demographics1 Title2: | Others |
| Demographics1 Info2: | Bhojpuri, Urdu |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code Type: | PIN |
| Postal Code: | 221712 |
Rasra is a city and a municipal board in Ballia district in the Indian state of Uttar Pradesh. It is one among six tehsils that come under Ballia district, Rasra is also known as 'Chhoti Kashi' and 'Nath Nagri' due to the presence of Nath Baba mandir which is a well known religious spot. In past the production of sugar from rotten sugarcanes lead to the city being named 'Rasra' which is a portmanteau word made-up of two hindi words 'Ras' (रस) meaning juice and 'Sada/Sara' (सड़ा) meaning rotten. It has an important market for the nearby villages. Lounglatta is the famous sweet of Rasra. Dussehra is one of two very prominent festivals, here, alongside Chhath . Rasra has top schools of district. Rasra has second largest Durga Puja celebration in Uttar Pradesh after Ram Nagar, Varanasi. Rasra has a busy fish market, chicken market and mutton narket. It has also Sadar Bazaar, Station Road Market, Hospital Complex Market, Mission Road Market, Kali Maa ka chauraha. This place is known for all religious cultures, and has many temples, churches and mosques.
Rasra is 34 km far from Ballia and 42 km from Mau. Rasra is located at .[1] It has an average elevation of .
India census,[2] Rasra had a population of 29,263.