Soldier's heart may refer to:

• "Soldier's Heart" (song), a 2003 song by R. Kelly
• Soldier's Heart (novel), a 1998 historical novella by Gary Paulsen
• Soldier's Heart (play), a Canadian play by David French
• Soldier's Heart (Ames novel), a 1996 novel by John Edward Ames
• Soldier's Heart: The Campaign to Understand My WWII Veteran Father: A Daughter's Memoir, a 2015 graphic novel by Carol Tyler
• "Soldier's Heart", an episode of the New Amsterdam TV series

• Da Costa's syndrome, several distinct disorders that were historically known collectively as soldier's heart
• Postural orthostatic tachycardia syndrome (POTS) and other related forms of dysautonomia; still in use in some areas
• Posttraumatic stress disorder, historically known as soldier's heart in veterans of the American Civil War