Lithuanian Americans refer to American citizens and residents of Lithuanian descent or were born in Lithuania.
New Philadelphia, Pennsylvania has the largest percentage of Lithuanian Americans (20.8%) in its population in the United States. Chicago has historically had the largest number of Lithuanian Americans and the largest Lithuanian diaspora in the world. Lithuanian Americans form by far the largest group within the Lithuanian diaspora.
Lithuanians (Lithuanian: lietuviai) are a Baltic ethnic group. They are native to Lithuania, where they number around 2,378,118 people. Another two million make up the Lithuanian diaspora, largely found in countries such as the United States, United Kingdom, Brazil and Canada. Their native language is Lithuanian, one of only two surviving members of the Baltic language family along with Latvian. According to the census conducted in 2021, 84.6% of the population of Lithuania identified themselves as Lithuanians. Most Lithuanians belong to the Catholic Church, while the Lietuvininkai who lived in the northern part of East Prussia prior to World War II, were mostly Lutherans.