IHS

IHS may refer to:

Religious

 * Christogram IHS or ΙΗΣ, a monogram symbolizing Jesus Christ
 * In hoc signo, used by Roman emperor Constantine the Great

Organizations

 * Indian Health Service, an operating division of the US Department of Health and Human Services
 * Dictaphone company division for healthcare dictating applications
 * IHS Markit, a data publishing company (Information Handling Services) that originated in 1959, and has since merged with Markit.

Institutes

 * Institute for Housing and Urban Development Studies, an international institute
 * Institute for Humane Studies, a US educational organization
 * Institute for Humanist Studies, a think tank based in Washington, DC

Societies

 * Indiana Historical Society, a historical society in the US
 * International Headache Society, organisation for professionals helping people affected by headache
 * International Horn Society, organization dedicated to horn-players
 * Ipswich Historical Society, in Ipswich, Massachusetts, US

Schools

 * Independence High School (Arizona), US
 * Irondequoit High School, Irondequoit, New York, US
 * Irvine High School, Irvine, California, US
 * Issaquah High School, Issaquah, Washington, US
 * The Indian High School, Dubai, United Arab Emirates
 * Interlake High School, Bellevue, Washington, US
 * Ithaca High School, Ithaca, New York, US

Technology

 * Intensity, hue, saturation, in the HSL color space
 * IBM HTTP Server, a web server
 * Integrated Heat Spreader, a heat spreader that serves as an interface between a chip and a heat sink

Other uses

 * Integrated Household Survey, a survey comprising multiple surveys in the UK
 * Ironclads: High Seas, a naval simulator computer game