Khalil al-Marzooq is a Bahraini Shi'a politician and former member of the Council of Representatives.

On February 14, 2011, al-Marzooq and 17 other MPs from Al Wefaq, the main Shi'a Islamist opposition party, resigned from their seats in parliament.

Following the quelling of the unrest by the government, al-Marzooq led negotiations with the government in the Bahrain national dialogue, but he and the four other delegates from Al Wefaq withdrew from negotiations on July 17.

Amnesty International designated him a prisoner of conscience and called for his immediate release.

[3] A Bahraini court acquitted him for the charges of "inciting terrorism" and belonging to a terrorist organization on June 25, 2014.