Mohs or MoHS can refer to:

• Friedrich Mohs, a 19th-century German geologist who developed:
  • Mohs scale, a scale used in materials science to describe hardness
• Frederic E. Mohs, an American doctor who developed:
  • Mohs surgery, a microscopically controlled surgery highly effective for common types of skin cancer
• Erik Mohs, a German professional racing cyclist
• Mohs Automobile, an automobile built by the American Mohs Seaplane Corporation
• Moanalua High School, a public, co-educational college preparatory high school in Hawaiʻi
• The Melancholy of Haruhi Suzumiya, a 2006 anime sci-fi television series
• Mount Olive High School, a U.S. public high school in Flanders, New Jersey
• Ministry of Health and Sports (Myanmar), a ministry of the government of Myanmar

• Mho, an alternative name for the Siemens (unit)