"Ocean Eyes" is the second single by American singer Billie Eilish and was part of her debut EP, Don't Smile at Me, and the album Everything, Everything. The song was written and produced by Eilish's older brother, Finneas O'Connell, and was originally written for his band.
Finneas gave the song to Eilish for her dance performance after realizing the song suited her vocals. It was originally released on SoundCloud on November 18, 2015, but was later rereleased commercially on November 18, 2016, as a single through Darkroom and Interscope Records.
"Ocean Eyes" received mainly positive reviews from critics, several of whom praised its composition and the lyrical content. The song was commercially successful, reaching number 84 on the US Billboard Hot 100.
It peaked within the top 60 in the record charts of several countries and peaked at number 72 on the UK Singles Chart. "Ocean Eyes" has received several certifications, including a triple-platinum certification by the Recording Industry Association of America (RIAA).
To promote the song, the track was accompanied by a music video directed by Megan Thompson released on March 24, 2016. A dance performance music video was also uploaded on YouTube on November 22, 2016.
Eilish included the track on the setlists of her 2019 When We All Fall Asleep Tour and her 2020 Where Do We Go? World Tour.