Who wrote the Titanic theme song?

There is no song in the movie Titanic that is widely referred to as the "Titanic theme song." However, the movie features several notable songs, including the instrumental composition "My Heart Will Go On," written and performed by Canadian singer-songwriter Celine Dion. The song became a global hit, reached the top of charts in numerous countries, and was released as the lead single from the 1997 soundtrack album. It is closely associated with the movie Titanic and is often regarded as its theme song.