"Last Name" is a song composed by American country singer Carrie Underwood, Hillary Lindsey and Luke Laird. It is the third single from Underwood's second studio album, Carnival Ride. It was released in the United States on April 7, 2008, by which point the song had already charted. At the 51st Grammy Awards, the song won Underwood her third consecutive Grammy Award for Best Female Country Vocal Performance. It has sold 1,300,000 copies to date

A family name (in Western contexts often referred to as a surname or last name) is typically a part of a person's personal name which, according to law or custom, is passed or given to children from one or both of their parents' family names. The use of family names is common in most cultures around the world, with each culture having its own rules as to how these names are formed, passed and used. But the practice is not universal, with some cultures not using family names (See mononym). Also, in most Slavic countries and in Greece, for example, there are different family name forms for male and female members of the family. Issues of family name arise especially on the passing of a name to a new-born child, on the adoption of a common family name on marriage, on renouncing of a family name and on changing of a family name.