IRTF may refer to:
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Internet Research Task Force
The Internet Research Task Force (IRTF) is an organization, overseen by the Internet Architecture Board, that focuses on longer-term research issues related to the Internet. A parallel organization, the Internet Engineering Task Force (IETF), foc ...
, a research organization working on topics related to the evolution of the Internet
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NASA Infrared Telescope Facility
The NASA Infrared Telescope Facility (NASA IRTF) is a telescope optimized for use in infrared astronomy and located at the Mauna Kea Observatory in Hawaii. It was first built to support the Voyager program, Voyager missions and is now the US n ...
, an infrared telescope in Hawaii
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Intensive Residential Treatment Facility, a facility for youth who require an intensive, out-of-home treatment intervention
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