"Astronaut in the Ocean" is a song by Australian rapper Masked Wolf. It was originally released in June 2019 before being re-released through Elektra Records on 6 January 2021. Following its re-release, the song achieved chart success, peaking at number 4 on the Australian ARIA Charts and number 6 on the US Billboard Hot 100. It was released as the lead single from his mixtape Astronomical. The song was produced by Tyron Hapi.