| Official Name: | Phasi Charoen |
| Native Name: | ภาษีเจริญ |
| Native Name Lang: | th |
| Settlement Type: | Khet |
| Coordinates: | 13.7147°N 100.4372°W |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Bangkok |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Bang Wa |
| Subdivision Type3: | Khwaeng |
| Subdivision Name3: | 7 |
| Established Title: | District established |
| Area Total Km2: | 17.834 |
| Population Total: | 126824[1] |
| Population As Of: | 2017 |
| Population Density Km2: | 7,111.36 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Postal Code Type: | Postal code |
| Postal Code: | 10160 |
| Geocode: | 1022 |
Phasi Charoen (Thai: ภาษีเจริญ, in Thai pronounced as /pʰāː.sǐː t͡ɕā.rɤ̄ːn/) is one of the 50 districts (Khet) of Bangkok, Thailand. The district is bounded by other Bangkok districts (from north clockwise): Taling Chan, Bangkok Noi, Bangkok Yai, Thon Buri, Chom Thong, Bang Bon, and Bang Khae.
The name of the district came from a canal, Khlong Phasi Charoen (คลองภาษีเจริญ), linking Tha Chin River to Khlong Bangkok Yai. The canal project was initiated by Phra Phasi Sombat Boribun (พระภาษีสมบัติบริบูรณ์), who later became Phraya Phison Sombat Boribun (พระยาพิสณฑ์สมบัติบริบูรณ์). Originally Phasi Charoen proposed to fund the project in exchange for the right to collect tolls for passage. It was approved by King Mongkut, however, with the fund given via tax deduction from the amount Phra Phasi Sombat Boriboon had to collect, thus making the canal toll-free. Construction began in 1866 and was completed in 1872 and the canal was named after the man who had overseen the project.
The district was established as Amphoe Phasi Charoen in 1899. It became Khet Phasi Charoen in 1972.
The district is divided into seven sub-districts (khwaeng).
| No. | Name | Thai | Area (km2) | Map |
|---|---|---|---|---|
| Bang Wa | Thai: บางหว้า | 5.105 | ||
| Bang Duan | Thai: บางด้วน | 2.514 | ||
| Bang Chak | Thai: บางจาก | 1.394 | ||
| Bang Waek | Thai: บางแวก | 3.022 | ||
| Khlong Khwang | Thai: คลองขวาง | 2.992 | ||
| Pak Khlong Phasi Charoen | Thai: ปากคลองภาษีเจริญ | 1.898 | ||
| Khuha Sawan | Thai: คูหาสวรรค์ | 0.909 | ||
| Total | 17.834 | |||