"19 Somethin'" is a song written by David Lee and Chris DuBois and recorded by American country music singer Mark Wills.

It was released in September 2002 as the first single from his Greatest Hits compilation album and spent six weeks at number one on the Hot Country Songs chart in early 2003.

Verse two, similarly, references 1980s pop culture, such as the Rubik's Cube, black Pontiac Trans Ams, and MTV.

In the song's bridge, the singer then expresses his desire to escape to his childhood years: "Now I've got a mortgage and an SUV / All this responsibility makes me wish sometimes / That it was 1980-somethin’."

An uncredited article in The Charlotte Observer said that the success of "19 Somethin'" was "doubly great" because it was a number one single and because it was up-tempo, in comparison to Wills's earlier ballads, such as "Don't Laugh at Me" and "Wish You Were Here".