Thomas v Mowbray,[1] was a decision handed of the High Court of Australia on 2 August 2007 concerning the constitutional validity of "interim control orders" under the Commonwealth Criminal Code.

Thomas had been the first Australian to be convicted under anti-terrorism laws introduced in Australia after the 11 September 2001 attacks in the United States.

[5] The trial was highly controversial, as the evidence used to prosecute Thomas consisted solely of an interview conducted in a Pakistani military prison.

He joined the magistrate, the Australian Federal Police officer that brought the application for the control order and the Commonwealth as defendants in the action.

[1] Q3 Is Division 104 of the Criminal Code invalid because it is not supported by one or more express or implied heads of legislative power under the Commonwealth Constitution?