Pierre Part (French: Ville de Pierre Part) is a census-designated place (CDP) in Assumption Parish, Louisiana, United States. The population was 3,169 at the 2010 census, making it the most populous community in Assumption Parish. With 39.3 percent of the population speaking French at home, Pierre Part is the most French town in the United States (by percentage) outside of Maine. Pierre Part is known locally for its prominent French touch and ancestry, which have become significant aspects of its contemporary local culture. Situated close Lake Verret, Pierre Part is a popular local destination for water sports and fishing during the summer.

Pierre Part was founded by Acadian French settlers after the Great Upheaval of 1755, during which much of the French population of Acadia was expelled by its British conquerors. The town remained solitary from most of the world, since it was amid water and was inaccessible by house until the mid-twentieth century. Before the Great Depression, the inhabitants of Pierre Part were fishermen; after the Depression, many men of the town were annoyed to locate work in new fields including logging, levee building, and the growing petroleum industry in Louisiana. Fewer people continue the traditional ways of fishing and perky off the house with each generation.

Pierre Part experienced flooding taking into account the Morganza Spillway was opened during the 1973 Mississippi River flooding.

The people of Pierre Part are predominantly of French ancestry, of families who either came directly from France or those whose came from Canada (Acadia), and before that, France. Until the early- to mid-twentieth century the people vis-а-vis exclusively spoke Cajun French at home. This caused the people of Pierre Part and the in flames of the Cajun community to be labeled as “backwards” or “ignorant” by outsiders, and in many cases from the 1910s to the 1970s, students whose first language was French were punished corporally in bookish for speaking it. From the 1970s onward, extremely few children were taught Cajun French as a first language, since the previous generations were taught to be dismayed of their heritage. In the 1990s an effort was made to reintroduce French into the scholarly systems. This became somewhat controversial as the French taught in intellectual was not Cajun French. Many of the teachers brought in were Belgian, French, and Canadian who taught their own dialect of French. However, there are yet many who contend that the Standard French taught in French Immersion classes at Pierre Part Elementary School is the best chance that local Cajuns have at preserving their language and culture, since there is no written good enough for teaching the Cajun dialect of the French language.