Lóngshān (simplified Chinese: 龙山; traditional Chinese: 龍山; literally "dragon mountain") may refer to the following in mainland China or Taiwan:
- Longshan culture, late Neolithic culture, centred on the central and lower reaches of the Yellow River
- Longshan County, Xiangxi, Hunan
- Longshan District, Liaoyuan, Jilin
- Longshan Temple, the name of five temples in Taiwan
- Mount Long, mountain in Linqing, Shandong
- Townships
- Longshan Township, Majiang County, Guizhou
- Longshan Township, Luoshan County, Henan
- Longshan Township, Tieling, in Yinzhou District, Tieling, Liaoning