Eilish is the youngest artist in history to take on the title track.
The song was written by Eilish and her older brother, Finneas, making her the youngest artist in history to both write and record a theme song for the super spy franchise.
"It feels crazy to be a part of this in every way. To be able to score the theme song to a film that is part of such a legendary series is a huge honor," said Eilish in a statement. "James Bond is the coolest film franchise ever to exist. I'm still in shock."
Her brother added, "Writing the theme song for a Bond film is something we've been dreaming about doing our entire lives. There is no more iconic pairing of music and cinema than the likes of Goldfinger and Live And Let Die. We feel so so lucky to play a small role in such a legendary franchise, long live 007."
"There are a chosen few who record a Bond theme. I am a huge fan of Billie and FINNEAS," director Cary Joji Fukunaga said in a statement. "Their creative integrity and talent are second to none and I cannot wait for audiences to hear what they've brought – a fresh new perspective whose vocals will echo for generations to come."
"No Time to Die," starring Daniel Craig, Rami Malek, Ana De Armas and Lashana Lynch, opens April 8, 2020.