heart sounds, in medicine

Heartbeat, a 1946 movie starring Ginger Rogers

Heartbeat (TV series), a British police drama

cardiac cycle, in animal anatomy

heart rate

Heartbeat: The Abbreviated King Crimson, a 1991 compilation album

Heartbeat (King Crimson song), a single from the 1982 album Beat

Heartbeat (novel), by Sharon Creech

Heartbeat (program), clustering software from Linux-HA

watchdog timer, a type of heartbeat mechanism

Heartbeat, a Stacey Q single also on the Nights Like This Album

Heartbeat (Buddy Holly song)

Heartbeat (Big Black single)

Heartbeat, a song by Red 7

Don Johnson - Heartbeat, an album and an eponymous single by Don Johnson

Heartbeat Records, a record label

"Heartbeat", a song by Paris Hilton from her 2006 album Paris

Heart Beat (company), a company that has made Dragon Quest games

Heartbeat (1993 film), a TV-Movie starring John Ritter and Polly Draper

Heartbeat, a single by Annie also on the Anniemal Album