| Kusi | |
| Other Name: | Mustafabad |
| Nickname: | Cleanest village of Ghazipur |
| Settlement Type: | village |
| Pushpin Map: | India Uttar Pradesh |
| Pushpin Map Caption: | Location in Uttar Pradesh, India |
| Coordinates: | 25.4092°N 83.6348°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Uttar Pradesh |
| Subdivision Type2: | District |
| Subdivision Name2: | Ghazipur |
| Established Title: | Established |
| Founder: | Zamindar Azam Khan |
| Governing Body: | Gram Panchayat |
| Unit Pref: | Metric |
| Population Total: | 5710 |
| Population As Of: | 2011 |
| Population Density Km2: | auto |
| Population Demonym: | Kamsari |
| Demographics Type1: | Local language Bhojpuri |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Hindi Urdu |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code Type: | 232326 |
| Registration Plate: | UP |
| Area Total Ha: | 436.91 |
| Area Land Ha: | 428.822 |
| Area Water Ha: | 8.088 |
| Pushpin Relief: | Yes |
Kusi (previously known as Mustafabad) is a village of Kamsaar in Ghazipur district in the Indian state of Uttar Pradesh. The village has also Jama masjid Kusi. The nearest railway station is Dildar nagar. As of 2011 census the main population of the village lived in an area of 62 acres and had 796 households. The family of Kusi were one of the largest zamindars of Ghazipur and their zamindari was known as Kusi Kusi zamindari it became a Zamindari chieftaincy in year 1858 which was ruled by the family of Kusi and Bhaksi, it had 15 villages with an area of 94 km² in year 1901.[1] [2]