OHS

OHS may refer to:

Medicine

 * Obesity hypoventilation syndrome
 * Occipital horn syndrome

Other

 * Occupational safety and health
 * Occupational Health Science, a scholarly journal published by the Society for Occupational Health Psychology
 * Oh's, a brand of cereals
 * Oracle HTTP Server
 * Over head system, a power supply scheme for bumper cars

Organizations

 * Ochsner Health System
 * Office of Homeland Security, Office of the Executive Branch of the United States, precursor to the Department of Homeland Security
 * Ohio Historical Society
 * Oklahoma Historical Society
 * Ontario Handweavers & Spinners
 * Oregon Historical Society
 * Organ Historical Society, in Villanova, Pennsylvania, United States
 * Ottawa Humane Society
 * Oxford Harmonic Society

High schools

 * Various countries
 * Orange High School (disambiguation), various schools of this name
 * Olympic High School (disambiguation), various schools of this name


 * Canada
 * Oromocto High School, in Oromocto, New Brunswick


 * New Zealand
 * Onehunga High School, in Auckland


 * United Kingdom
 * Oriel High School, in Crawley, West Sussex, England
 * Oxford High School, in Oxford, Oxfordshire, England


 * United States
 * Oakland High School, in Oakland, California
 * Oakmont High School, in Antelope, California
 * Oakton High School, in Vienna, Virginia
 * Oceanside High School, in Oceanside, California
 * Odessa High School (New York), in Odessa, New York
 * Odessa High School, in Odessa, Texas
 * Odessa High School (Washington), in Odessa, Washington
 * Ogden High School (Utah), in Ogden, Utah
 * Olympian High School, in San Diego County, California
 * Olympic High School, in Charlotte, North Carolina
 * Opelika High School, in Opelika, Alabama
 * Orem High School, in Orem, Utah
 * Orion High School, in Orion, Illinois
 * Osborne High School, in Marietta, Georgia
 * Ottawa Senior High School, in Ottawa, Kansas
 * Ottumwa High School, in Ottumwa, Iowa
 * Stanford Online High School, online school based in Redwood City, California
 * Oswego High School, in Oswego Illinois
 * Oswego High School, in Oswego, New York