Ocean Eyes (song)

"Ocean Eyes" is the debut single by American singer-songwriter Billie Eilish. It was initially released on SoundCloud on November 18, 2015, and then temporarily released as a promotional recording on January 8, 2016, with Drup Music. "Ocean Eyes" was solely written and produced by Eilish's brother Finneas O'Connell, who originally wrote it for his band, but later gave the song to Eilish after feeling the song suited her vocals.

On November 18, 2016, "Ocean Eyes" was officially released as the lead single from Eilish's debut extended play, Don't Smile at Me (2017), by Darkroom and Interscope Records. The song was also included on the soundtrack album to the film Everything, Everything (2017).

"Ocean Eyes" received mainly positive reviews from critics, several of whom praised its composition and lyrical content. The song did not appear on any charts until 2018, reaching number 84 on the US Billboard Hot 100, number 72 on the UK Singles Chart, and within the top 60 of the charts of several other countries. "Ocean Eyes" received diamond certifications in Canada, France, and Mexico, as well as multi-platinum certifications in Australia, Austria, Brazil, Denmark, New Zealand, Poland, Portugal, the United Kingdom, and the United States.

To promote the song, the track was accompanied by a music video, directed by Megan Thompson and released on March 24, 2016. A dance performance video was released on November 22, 2016. Eilish included the track on the set lists of her 2019 When We All Fall Asleep Tour, her 2020 Where Do We Go? World Tour, her 2022 Happier Than Ever, The World Tour, and her 2024–2025 Hit Me Hard and Soft: The Tour.