RTCA or rTCA may refer to:
*
Radio Technical Commission for Aeronautics, an organisation that develops aviation standards
*
Rio Tinto Coal Australia
Rio Tinto Coal Australia (RTCA) was an Australian coal mining organisation, that was part of the worldwide Rio Tinto Group. In 2018, Rio Tinto completed the sale of its remaining assets
RTCA Operations
RTCA Queensland Operations
Blair ...
, an Australian coal mining company
*
Radio and Television Correspondents Association, an organization for political reporters in Washington, D.C.
*
Reverse tricarboxylic acid cycle, a biochemical cycle occurring in some bacteria and archaea
* The
Rivers, Trails and Conservation Assistance Program of the US National Park Service
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