"Total Eclipse of the Heart" is a song written and produced by Jim Steinman and recorded by Welsh singer Bonnie Tyler in 1983 on her fifth studio album Faster Than the Speed of Night. The song was the first single release from the album and is Tyler's biggest hit.

The song remains Tyler's most successful song, peaking at #1 in the United States, Australia, Canada, and the United Kingdom. At its peak, it sold 60,000 copies per day, and approximately 6 million copies in total. It won the Variety Club award in the UK for best single of 1983.

According to Meat Loaf, Steinman had given the song, along with "Making Love (Out of Nothing At All)", to Meat Loaf for his Midnight at the Lost and Foundalbum. However, Meat Loaf's record company refused to pay for Steinman and he wrote separate songs himself. "Total Eclipse of the Heart" was then given to Bonnie Tyler and "Making Love (Out of Nothing At All)" to Air Supply.

The music video for "Total Eclipse of the Heart" was directed by Russell Mulcahy. It was story-boarded by Jim Steinman and drew inspiration from the 1976 film Futureworld. The Gothic themed video features Bonnie Tyler clad in white, apparently having a dream or fantasy about her students in a boys' boarding school. Young men are seen dancing and participating in various school activities such as swim team, karate, fencing, football, and singing in a choir. The video was shot at Holloway Sanatorium.

The original version of the song, on Faster Than the Speed of Night, was just over seven minutes in length. Thus, an edited version was, and still is most commonly played on radio. The radio version is four and a half minutes, and removes the entire third verse and trims the extended fade-out ending. The music video version is roughly one minute longer than the radio version.

In November 2002, it was voted the #72 in "The Greatest Number Ones Of All Time" in UK. It was also voted #94 in the "Greatest Music Videos of All Time" poll held by Channel 4. In October, 2006, VH1's "100 Greatest Songs of the 80s" special included "Total Eclipse of the Heart" at #56. MuchMoreMusic aired a four-episode series in 2006 titled Top 50 Guilty Pleasures, and listed the song at #9.

It has been covered several times, and rewritten with Michael Kunze for the musical Tanz der Vampireas "Totale Finsternis".

Nicki French released a dance cover of the song in 1994, which was also a worldwide hit. In the United States, French's version peaked at #2 on the Hot 100 and garnered frequent airplay on CHR and AC radio. It also reached #5 in the UK Singles Chart after being re-issued in 1995. On June 2006 Nicki French released an updated version of the track with the Diva DJs.