"Fidelity" is a song by American singer-songwriter Regina Spektor, released as the second single from her fourth album Begin to Hope.

Spektor wrote the song while watching the movie High Fidelity, which is based on a book by Nick Hornby.

[3] This song would have achieved a higher placing if digital downloads had been included earlier, as shown by the single's concurrent top ranking at the New Zealand iTunes Store.

In 2009, the popularity of Spektor's single "Laughing With" caused a revival in sales of Fidelity, bringing it to #55 on the Alternative Songs Chart on US iTunes.

The song was also used in Veronica Mars, Brothers & Sisters, A Favorita, Grey's Anatomy, Secret Diary of a Call Girl, 27 Dresses, Love & Other Drugs, and Las Vegas (TV series).