Mounir El Hajj (Arabic: منير الحاج; born 1936) is a Lebanese politician and lawyer who headed the Kataeb Party from 1999 until 2001.

In 1960, she obtained a degree in French and Lebanese law from Saint Joseph University of Beirut.

He presented himself in 1970 as a candidate for the party in the parliamentary by-elections in the Metn district after the death of Maurice Gemayel and obtained the support of the bases, but the Politburo preferred him to the president's son, Amin Gemayel, who eventually won the seat after defeating Fouad Lahoud.

[4][5] He led a list called “Al-Tawafuq Al-Matni” that included Emile Emile Lahoud, Ghassan Al-Ashqar, Shaker Bou Suleiman, Michel Al-Murr, Antoine Haddad and Sebouh Hovenanian, but he was defeated by Pierre Amin Gemayel[5] of the Phalangist opposition as the party was undivided.

The party remained divided throughout El-Hajj's presidency, with the presence of opposition led by Elie Karameh and Amin Gemayel, which intensified after his electoral defeat.