| Bayanzürkh District | |
| Native Name: | Баянзүрх дүүрэг |
| Native Name Lang: | mn |
| Settlement Type: | Municipal District |
| Flag Size: | 150 px |
| Subdivision Type: | Country |
| Subdivision Name: | Mongolia |
| Subdivision Type1: | Municipality |
| Subdivision Name1: | Ulaanbaatar |
| Governing Body: | Citizens' Representatives Khural of the Bayanzürkh district |
| Leader Title: | Governor of District |
| Leader Name: | N.Bayarmönkh |
| Established Title: | Nairamdal raion of Ulaanbaatar |
| Established Date: | 1965 |
| Established Title1: | Reorganized as district |
| Established Date1: | 1992 |
| Area Total Km2: | 1,244.1 |
| Population As Of: | 2024 |
| Population Total: | 436,822 |
| Timezone: | UTC + 8 |
| Utc Offset: | +8 |
| Website: | http://bzd.ub.gov.mn/ |
Bayanzürkh (rich heart) is one of nine Düüregs (districts) of the Mongolian capital of Ulaanbaatar. It is subdivided into 20 Khoroos (subdistricts).
It is the largest district in the capital and lies in the southeast of the city. It was established in 1965. In 2006 it had an approximate population of 184,690 in 44,138 households. A total of 23 state kindergartens and 19 secondary schools are located in the district area. By 2019 this district has 405 people and 26436 animals.
Bayanzürkh is located in the east, at the foot of one of the four mountains of Ulaanbaatar, the Bayanzürkh Uul.
The head office of Eznis Airways is located in the Shine Dul Building (Шинэ Дөл Билдинг) in Bayanzürkh. The head office moved there by 27 August 2011.[1]