Pierre de Saintignon (22 May 1948 – 9 March 2019) was a French politician. He was a member of the French Socialist Party (Parti Socialiste or PS) since 1967. He was elected councilor to the Lille municipality in 1989, 1995, 2001, 2008 and 2014, the first two terms under Pierre Mauroy and the other three under Martine Aubry. From 2001, he was the First Deputy-Mayor, in charge of finance, economic development and military matters. In 1998, 2004 and 2010 he was elected councilor the Regional Council of Nord-Pas-de-Calais, where he sat as first vice-president, in charge of economic development. Most of his political career was as an unofficial chief of staff, rather than as a foreground person. He was chosen to lead the PS list for the 2015 regional elections that were held on 6 and 13 Decembe