Daxing District (Chinese: 大兴区; pinyin: Dàxīng Qū) is a district of Beijing, covering the southern suburbs of the city. It borders the Beijing districts of Tongzhou to the east/northeast, Fangshan to the west, Fengtai to the northwest, Chaoyang to the northeast, and the Hebei province to the south.

The Daxing Massacre of August 27-31, 1966 during the Cultural Revolution resulted in the deaths of at least 325 people, ranging in age from 38 days to 80 years.

Daxing District was upgraded from a county to a district with the approval from the State Council on April 30, 2001. Covering an area of 1,012 square kilometres (391 sq mi) with a population of 671,444, Panggezhuang in Daxing is famous for its watermelons.

In 2021, there are 8 subdistricts, 14 towns with 5 towns of which carry the "area" (地区) label in the district, and 4 analogous township-level units:

Name	Chinese (S)	Hanyu Pinyin	Population (2020)	Area (km)
Xingfeng Subdistrict	兴丰街道	Xìngfēng Jiēdào	79,851	9.66
Linxiao Road Subdistrict	林校路街道	Línxiàolù Jiēdào	81.389	12.65
Qingyuan Subdistrict	清源街道	Qīngyuán Jiēdào	147,810	5.58
Guanyinsi Subdistrict	观音寺街道	Guānyīnsì Jiēdào	111,225	16.40
Tiangongyuan Subdistrict	天宫院街道	Tiāngōngyuàn Jiēdào	87,415	33.30
Gaomidian Subdistrict	高米店街道	Gāomǐdiàn Jiēdào	99,959	5.59
Yizhuang (town) Area	亦庄(镇)地区	Yìzhuāng (Zhèn) Dìqū	108,255	39.63
Ronghua Subdistrict	荣华街道	Rónghuá Jiēdào
Boxing Subdistrict	博兴街道	Bóxīng Jiēdào
Huangcun (town) Area	黄村(镇)地区	Huángcūn (Zhèn) Dìqū	176,890	35.00
Jiugong (town) Area	旧宫(镇)地区	Jiùgōng (Zhèn) Dìqū	189,300	29.73
Xihongmen (town) Area	西红门(镇)地区	Xīhóngmén (Zhèn) Dìqū	179,974	31.20
Yinghai (town) Area	瀛海(镇)地区	Yínghǎi (Zhèn) Dìqū	102,463	36.79
Qingyundian town	青云店镇	Qīngyúndiàn Zhèn	69,612	70.00
Caiyu town	采育镇	Cǎiyù Zhèn	54,690	71.6
Anding town	安定镇	Āndìng Zhèn	30,764	78.00
Lixian town	礼贤镇	Lǐxián Zhèn	40,930	92.06
Yufa town	榆垡镇	Yúfá Zhèn	71,812	136.00
Panggezhuang town	庞各庄镇	Pánggèzhuāng Zhèn	74,912	109.30
Beizangcun town	北臧村镇	Běizāngcūn Zhèn	35,391	60.00
Weishanzhuang town	魏善庄镇	Wèishànzhuāng Zhèn	46,661	81.5
Zhangziying town	长子营镇	Zhǎngzǐyíng Zhèn	34,588	63.00
Beijing Economic and Technological Development Area	北京经济技术开发区	Běijīng Jīngjì Jìshù Kāifāqū	148,145	46.80
Biomedical Industry Base	生物医药产业基地	Shēngwù Yīyào Chǎnyè Jīdì	10,201	6.83
National New Media Industry Base	国家新媒体产业基地	Guójiā Xīnméitǐ Chǎnyè Jīdì	9,827	3.74
Daxing International Airport	大兴国际机场	Dàxīng guójì jīcháng	1,527	N/A

Located in the south of Beijing, the area is not as affluent as those that most visitors to Beijing are familiar with, such as Xidan and Guomao. Much of the industry in Daxing is related to distribution of food and consumer goods to service Beijing. There are many self-built communities casually created by the residents themselves, mostly of whom have moved in from the countryside.

The Beijing Municipal Administration of Prisons operates the following correctional facilities in the district:

• Beijing Municipal Prison
• Beijing Women's Prison

Additionally Okay Airways, and Xiabu Xiabu have their headquarters in Daxing District.

There are two major universities located in Daxing District, the Beijing Institute of Petrochemical Technology and the Beijing Institute of Graphic Communication. Both of them are headquartered in Qingyuan Subdistrict (清源), and have its branch in Kangzhuang (康庄). Qingyuan and Kangzhuang are planned as a university town in Daxing District. The Yang Guang Qing School of Beijing is also located in the district.

National Seminary of Catholic Church in China is in Daxing District.

It was decided in 2009 that Daxing would be the location of the Beijing Daxing International Airport. It was constructed in the southern part of Daxing District of Beijing and along the border of Beijing and Hebei Province. The airport was opened in September 2019.

Daxing is currently served by four metro lines of the Beijing Subway:

•      Line 8 - Demao, Yinghai
•      Daxing line (through operation to Line 4) - Xihongmen, Gaomidian North, Gaomidian South, Zaoyuan, Qingyuanlu, Huangcun Xidajie, Huangcun Railway Station, Yihezhuang, Biomedical Base, Tiangongyuan
•      Yizhuang line - Jiugong, Yizhuangqiao, Yizhuang Culture Park, Wanyuanjie, Rongjingdongjie, Rongchangdongjie
•      Daxing Airport Express - Daxing Xincheng

Daxing has a humid continental climate (Köppen climate classification Dwa). The average annual temperature in Daxing is 12.9 °C (55.2 °F). The average annual rainfall is 533.5 mm (21.00 in) with July as the wettest month. The temperatures are highest on average in July, at around 26.8 °C (80.2 °F), and lowest in January, at around −3.2 °C (26.2 °F).