Pierre Poujade (December 1, 1920–August 27, 2003) was a French populist politician after whom the Poujadist movement was named.

Poujadism flourished most vigorously in the last years of the French Fourth Republic and articulated the economic interests and grievances of shop keepers and other proprietor-managers of small businesses facing economic and social change. The movement's main revendication was of lower taxes; ideologically, the movement was corporatist, denouncing of the political, journalistic establishment; later, the movement grew increasingly nationalist and xenophobic and critical of parliamentary institutions.

The political arm of the movement was the UDCA, which secured 53 seats in the National Assembly in 1956.

The word poujadisme now has in France the general meaning of some political ideology that articulates the fears of some part of the population facing social or economic change, and that blame the problems on the "establishment" and the political system. Examples of political group with strong alleged poujadist leanings include Jean-Marie Le Pen's National Front (Le Pen was a UDCA politician in his youth).