Tuen Mun Hospital (Chinese: 屯門醫院) is a public hospital with a 24 hour casualty unit situated in northern Tuen Mun in the New Territories, Hong Kong. Construction began in 1979, and was opened on 1990-03-08. It is managed by the Hospital Authority, and is grouped under the New Territories West Cluster.
As at 2005-03-31, it had 1,536 hospital beds, and staff of approximately 3,000.
During the phillipine hijack in August 2010, the Hong Kong casualties who had survived were brought to this hospital to be treated.