Internal Security Operations Command

Internal Security Operations Command (Thai: กองอำนวยการรักษาความมั่นคงภายในราชอาณาจักร; RTGS: kong amnuaikan raksa khwam mankhong phainai ratcha-anachak ) or ISOC (Thai: กอ.รมน.; RTGS: ko o ro mo no) is the internal security agency and political arm of the Royal Thai Armed Forces (RTARF). It was responsible for counterinsurgency, counterintelligence, internal security, and the suppression of leftist groups from the 1960s to the 1980s. During this period it was implicated in atrocities against activists and civilians. ISOC was implicated in a plot to assassinate Prime Minister Thaksin Shinawatra.

After Thaksin was deposed by the 2006 Thai coup d'état, the junta transformed ISOC into a government within a government, giving it wide-reaching authority over the Anti-Money Laundering Office (AMLO), the Department of Special Investigation (DSI), and the National Anti-Corruption Commission (NACC). The junta also authorized it to help provincial authorities in marketing One Tambon One Product (OTOP) products.

In June 2007, the junta approved a draft national security bill which gave ISOC sweeping powers to handle "new forms of threats" to the country. The ISOC revamp modelled it after the United States Department of Homeland Security (DHS) and gave ISOC sweeping new powers to allow the ISOC chief to implement security measures, such as searches without seeking prime ministerial approval.