| Bhawan Bahadur Nagar | |
| Native Name Lang: | Hindi |
| Other Name: | B.B. Nagar |
| Nickname: | Bhaun |
| Settlement Type: | Town |
| Pushpin Map: | India Uttar Pradesh |
| Pushpin Map Caption: | Location in Uttar Pradesh, India |
| Coordinates: | 28.6542°N 77.9561°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Uttar Pradesh |
| Subdivision Type2: | District |
| Subdivision Name2: | Bulandshahr |
| Unit Pref: | Metric |
| Population Total: | 10,188 |
| Population As Of: | 2011 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Hindi |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code Type: | PIN |
| Postal Code: | 203402 |
| Registration Plate: | UP 13 |
Bhawan Bahadur Nagar (B. B. Nagar) is a town and a Nagar panchayat in Bulandshahr district in the state of Uttar Pradesh, India. It is also a part of the National Capital Region of Delhi. This town is near to Hapur District.
census of India,[1] Bhawan Bahadur Nagar had a population of 10,188.[2] Males constitute 53% of the population and females 47%. Bhawan Bahadur Nagar has an average literacy rate of 60%, higher than the national average of 59.5%; with male literacy of 72% and female literacy of 46%. 15% of its population is under 6 years of age. BB Nagar stands for Bhawan Bahadur Nagar.
Siyana is the tehsil of BB Nagar. BB Nagar is a Block of Bulandshahr district.