| Yonbanchō | |
| Native Name: | 四番町 |
| Native Name Lang: | ja |
| Settlement Type: | District |
| Coordinates: | 35.6891°N 139.738°W |
| Subdivision Type: | Country |
| Subdivision Name: | Japan |
| Subdivision Type1: | City |
| Subdivision Name1: | Tokyo |
| Subdivision Type2: | Ward |
| Subdivision Name2: | Chiyoda |
| Subdivision Type3: | Area |
| Subdivision Name3: | Kōjimachi Area |
| Unit Pref: | Metric |
| Population As Of: | June 1, 2020 |
| Population Total: | 2,646[1] |
| Population Density Km2: | auto |
| Timezone1: | JST |
| Utc Offset1: | +9 |
| Postal Code: | 102-0081 |
| Area Code: | 03 |
Part of the Banchō area, is an upscale, mostly residential district of Chiyoda, Tokyo, Japan. As of June 2020, the population of this district is 2,646 in 1,169 households.
operates public elementary and junior high schools. Kudan Elementary School (九段小学校) is the zoned elementary school for Yonbanchō 1-3, 8, and 11 chōme. Banchō Elementary School (番町小学校) is the zoned elementary school for Yonbanchō 4-7 and 9 chōme.[2] There is a freedom of choice system for junior high schools in Chiyoda Ward, and so there are no specific junior high school zones.[3]