"Ocean Eyes" is a song by American singer Billie Eilish from her debut EP, Don't Smile at Me (2017).

"Ocean Eyes" was written and produced by Eilish's brother Finneas O'Connell, who originally wrote it for his band.

"Ocean Eyes" received mainly positive reviews from critics, several of whom praised its composition and lyrical content.

To promote the song, the track was accompanied by a music video, directed by Megan Thompson and released on March 24, 2016.

Finneas had written and produced "Ocean Eyes" originally for his band, the Slightlys, before realizing it would be a better fit for Eilish's vocals.

[10] An EP featuring remixes by Astronomyy, Blackbear, Goldhouse and Cautious Clay was released on January 14, 2017.

[11] In 2023, Katy Perry revealed that she was sent an email by Unsub Records about "Ocean Eyes" with hopes of collaboration when it was to be released.

[19] Writing for i-D, Mathias Rosenzweig described the song as an "unhurried, minimalist beats and lush synths, reminiscent of ocean waves on a dreary grey day".

[20] Mathias Rosenzweig of Vogue stated that Eilish compares "love to falling off a cliff" and that she is "surrounded by the warlike intensity of napalm skies" and further says it's "a profound description for a 14-year-old, and it's led to an enormous amount of interest in her debut song—as well as the singer herself.

[18] Nicole Almeida of Atwood Magazine commended the lyrical content, which she described as "vulnerable" and "atmospheric", and mentions "the layered vocals and Eilish's great voice make this song special".

[25] NME ranked "Ocean Eyes" at number 11 on its "Every single Billie Eilish song ranked in order of greatness" list, with the staff saying the "most memorable moments on 'Ocean Eyes' are its most vulnerable, like the opening whispers or the sure-footed yet restrained chorus".

[1] Dan Regan of Billboard praised Astronomyy's remix, saying "[Eilish's] voice echoes over a stripped down intro before a tinny beat kicks in with some new background vocals", while he cited Blackbear's remix brought the song "new emotional heights" and described it has "trapped ou with 808 tinges and even more ghostly with his added vocal harmonies".

[34] A music video for "Ocean Eyes" directed by Megan Thompson was uploaded to Eilish's official YouTube channel on March 24, 2016.

[43] Alicia Keys covered "Ocean Eyes" in December 2019 at Jungle City Studios in New York for Spotify's Singles series.

Rania Aniftos of Billboard said Keys' cover gave "Ocean Eyes" a "characteristically soulful twist with a piano arrangement".

[49] Eilish performed "Ocean Eyes" on the first night of the opening weekend at Coachella with Lana Del Rey.