OHS

OHS may refer to:

• Obesity hypoventilation syndrome
• Occipital horn syndrome
• Occupational Health and Safety
• Ochsner Health System
• Office of Homeland Security, Office of the Executive Branch of the United States, precursor to the Department of Homeland Security
• Oh's, a brand of cereals
• Ohio Historical Society
• Ontario Handweavers & Spinners
• Oracle HTTP Server
• Oregon Historical Society
• Organ Historical Society, in Richmond, Virginia, United States
• Ottawa Humane Society

High schools

• Oakland High School, in Oakland, California, United States
• Oakmont High School, in Antelope, California, United States
• Oakton High School, in Vienna, Virginia, United States
• Ogden High School (Utah), in Ogden, Utah, United States
• Olympian High School
• Onehunga High School, in Auckland, New Zealand
• Orem High School, in Orem, Utah
• Oriel High School, in Crawley, West Sussex, United Kingdom.
• Orion High School, in Orion, Illinois, United States
• Osborne High School, in Marietta, Georgia, United States
• Ottawa Senior High School, in Ottawa, Kansas, United States
• Ottumwa High School, in Ottumwa, Iowa, United States
• Oxford High School, in Oxford, Oxfordshire, United Kingdom

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