Wikipedia
                    MDHS
                    
                        
                
                                                                    MDHS can refer to one of the following high schools:
- Markham District High School, Markham, Ontario, Canada
 - Mater Dei High School (disambiguation)
 - Monsignor Donovan High School, Toms River, New Jersey, USA
 - Mount Douglas High School, Saanich, British Columbia, Canada
 - Milton District High School, Milton, Ontario, Canada
 
It can also refer to:
- MDHS100, a standard for Surveying, sampling and assessment of asbestos containing materials produced by the UK Health and Safety Laboratory
 - Majlis Daerah Hulu Selangor, one of the Local Authorities in the State of Selangor in Malaysia, located in the Kuala Kubu Bharu Town.
 - Maryland Historical Society, abbreviated as MdHS
 - The Faculty of Medicine, Dentistry and Health Sciences, at the University of Melbourne
 - Mississippi Department of Human Services