Pierre Hélou is a Lebanese former minister for Industry (1972-1973, government of Saëb Salam), elected appointed Maronite of Aley in 1972 in Mount-Lebanon. Nonaffiliated to a political party, it was often had a presentiment of to be elected President of the Republic, in particular after the assassination of President Rene Moawad after the agreements of Taëf in November 1989. It was also had a presentiment of for the temporary post of Prime Minister at the end of the mandate of President Amine Gemayel in 1988, but it refused this station, which was allotted to the commander-in-chief of the Army of the time, Michel Aoun.

It takes share with the legislative elections of 1992, in spite of the boycott of these elections by the large majority of the parties and Christian personalities and is elected in its district of Aley. Combined at the time of the elections of 1996 with Talal Arslan, it loses the elections, vis-a-vis the candidates aligned by the chief of the Socialist party Progressist Walid Joumblatt. Later, he becomes president of the Ligue Maronite. He gains the elections in 2000 again, always combined in Arslan, and is the only candidate of the list to bore the lists of alliance between Walid Joumblatt and Rafiq Hariri, (Arslan having been elected fault of competitor on the unfavourable list). Named in the tread in November 2000 minister of state without wallet in the government of Rafiq Hariri, it adopts a moderated, independent attitude and remains with the variation of the political tensions between Rafic Hariri and President Emile Lahoud.

He dies brutally in 2003, a few weeks after his exit of the government, at the time of a debate televised on the chain of the Hezbollah Al-Manar. His/her son Henry Hélou is elected thereafter at his station of deputy.