纽奥良（英语：New Orleans 英语发音：/nuːˈɔrlɪnz/,英语发音：/nuːˈɔrliənz/，英语发音：/nuːɔrˈliːnz/或英语发音：/ˈnɔrlənz/；法语：La Nouvelle-Orléans [la nuvɛlɔʁleɑ̃]）是美国主要的港口城市，位于路易斯安那州的南部，同时也是该州最大的城市。行政上与奥尔良县（Orleans Parish）同域。

新奥尔良因为其数目众多的法式建筑、克里奥尔美食和丰富的音乐形式（爵士乐的诞生地）而闻名，也被人称为“美国最独特的城市”。

New Orleans (/nuː ˈɔːrlɪnz/, /nuː ˈɔːrliənz/, /nuː ɔːrˈliːnz/, or /ˈnɔːrlənz/; French:La Nouvelle-Orléans [la nuvɛlɔʁleɑ̃]) is a major United States port and the largest metropolitan area in the state of Louisiana. The population of the city was 343,829 as of the 2010 U.S. Census. The New Orleans metropolitan area (New Orleans–Metairie–Kenner Metropolitan Statistical Area) had a population of 1,167,764 in 2010 and was the 46th largest in the United States. The New Orleans–Metairie–Bogalusa Combined Statistical Area, a larger trading area, had a 2010 population of 1,452,502.