Ridha Belhaj (), (born 16 February 1962) is a Tunisian lawyer, senior official and politician.
Ridha Belhaj studied at Alaoui High School in Tunis and then at the Tunisian-Algerian Institute, where he obtained a law degree in 1986 and a diploma in customs and tax economics in 1988.
He was first head of service in the general directorate of participations of the Ministry of Finance. From 2002, he practiced as a lawyer with the Court of cassation.
Having served as the General-secretary and delegate-minister in Beji Caid Essebsi's Transitional Government from February 2011 to December 2011.
On 1 January 2015, the new president of Tunisia Essebsi appointed him the head of his presidential cabinet. On 1 February 2016, Belhaj stepped back to be replaced by Caid Essebsi's cousin Selim Azzabi.
After leaving the government, he joined Nidaa Toune. Member, spokesperson and then vice-president of Nidaa Tounes, he resigned from this party in February 2016 due to political perspective problems. In 2017, he announced the creation of a new party called Tounes Awalan of which he is the chairman of the constitutive committee.
Ridha Belhaj is married and has three children.
He is currently in prison.