墨西哥莱檬派（英语：Key lime pie），是由墨西哥莱檬汁、蛋黄和大量炼乳为主要原料做成的西式馅饼，起源于美国佛罗里达州。

在2006年，佛罗里达州的众议院和参议院通过立法，定墨西哥莱檬派为佛罗里达州的“官方州派”。

Key lime pie is an American dessert made of Key lime juice, egg yolks, and sweetened condensed milk in a pie crust.The traditional Conch version uses the egg whites to make a meringue topping. The dish is named after the small Key limes (Citrus aurantifolia 'Swingle') that are naturalized throughout the Florida Keys. While their thorns make them less tractable, and their thin, yellow rinds more perishable, Key limes are more tart and more aromatic than the common Persian limes seen year-round in U.S. grocery stores.