- 龙门石窟 Lóngmén Shíkū Longmen GrottoesThe Longmen Grottoes, a famous UNESCO World Heritage site located at Luoyang in Henan province.
- 摆龙门阵 bǎilóngménzhèn chat(dialect) to chat, gossip, or spin a yarn
- 鲤鱼跳龙门 lǐyútiàolóngmén advancementto make a significant advance in one's career or get one's big break
- 龙门山 Lóngménshān Henan mountainMt Longmen in Henan province, famously associated with the Longmen Grottoes near Luoyang.
- 龙门县 Lóngmén Xiàn Longmen CountyLongmen County in Huizhou City, Guangdong
- 龙门刨 lóngménbào gantry planerdouble column surface grinding machine
- 龙门山断层 Lóngménshānduàncéng Longmenshan fault lineA tectonically active thrust fault line at the northwest boundary of the Sichuan basin
- 龙门断层 Lóngménduàncéng Longmenshan faultLongmenshan fault line, a tectonically active thrust fault line at the northwest boundary of the Sichuan basin