"Soldier" is a song recorded by American group Destiny's Child, featuring American rappers T.I. and Lil Wayne, for the group's final studio album Destiny Fulfilled (2004). The artists wrote the song with Sean Garrett and Rich Harrison who produced it with the latter co-produced it with Beyoncé. A Southern hip hop mid-tempo song, it lyrically describes each member's favorite type of male love interest. The song was released as the second single from Destiny Fulfilled on November 9, 2004, by Columbia Records and Sony Urban Music.

"Soldier" received mostly positive reviews from music critics, who praised its composition and the trio's vocal performances, but criticized the lyrical content. The song received a nomination in the category for Best Rap/Sung Collaboration at the 48th Annual Grammy Awards and won a Best R&B/Soul Single by a Group, Band or Duo award at the 2005 Soul Train Music Awards. A commercial success, "Soldier" peaked within the top five in six European countries and in Australia, being certified gold in the latter region. In the United States, it peaked at number three on the Billboard Hot 100 and topped the Dance Club Songs chart, receiving a platinum certification from the Recording Industry Association of America (RIAA).

The black-and-white music video directed by Ray Kay featured cameo appearances by several rappers and singers. It was nominated at the 2005 MTV Video Music Awards under the category of Best Group Video. The band performed "Soldier" on several televised appearances in 2004 and 2005 and included it on the set list of their final tour Destiny Fulfilled... And Lovin' It (2005). Both Beyoncé and Kelly Rowland performed the song during their solo tours after Destiny's Child's disbandment. The song was sampled in many songs by different artists, most notably by Nelly on his single "Grillz" (2005).