Robin Simcox (born March 1983) is a political researcher who is the current Commissioner for Countering Extremism (CCE) at the United Kingdom's Home Office.

[6] In March 2021, home secretary Priti Patel appointed Simcox as commissioner of the Commission for Countering Extremism in an interim capacity, replacing Sara Khan.

[10] In October 2023, following the beginning of the 2023 Israel–Hamas war, Simcox argued in The Times that the UK was a "permissive environment" for antisemitism, and that the country was bearing the cost of a "three-decade long failed policy mix of mass migration and multiculturalism".

[12] On 19 October, Simcox called for the Islamic Revolutionary Guard Corps (IRGC) in Iran to be proscribed as a terrorist organisation in a speech to the Royal United Services Institute think tank, his first as CCE Commissioner.

[13][14][11] In the same speech, he argued that the pro-Palestinian "from the river to the sea" chant should be seen as "genocidal in nature" and that environmental groups would "become increasingly militant and that acts of violence will be the logical end".