Deja Vu (Olivia Rodrigo song)

"Deja Vu" (stylized in all lowercase) is a song by American singer-songwriter Olivia Rodrigo. It was released on April 1, 2021, through Geffen and Interscope Records, as the second single from her debut studio album, Sour (2021). Rodrigo wrote the song with its producer Dan Nigro, with Taylor Swift, Jack Antonoff, and St. Vincent receiving writing credits for its interpolation of Swift's 2019 song "Cruel Summer". An incorporation of various pop and rock sub-genres, "Deja Vu" explores themes of nostalgia, heartbreak, and the complexity of moving on from a past relationship. Olivia Rodrigo reflects on the memories associated with her previous relationship and the struggle to let go, even as she acknowledges that the new couple is creating their own memories.

"Deja Vu" received acclaim from music critics, many of whom considered it a strong follow-up to "Drivers License" (2021) and praised its lyrics. In the United States, the song debuted at number eight on the Billboard Hot 100 and made Rodrigo the first artist to debut their first two singles in the chart's top 10. It eventually peaked at number three. "Deja Vu" reached the top 10 in Ireland, Australia, Malaysia, New Zealand, Singapore, Canada, Latvia, the United Kingdom, Portugal, and the Czech Republic.

Allie Avital directed the music video for "Deja Vu", filmed in Malibu, California, which shows how the place she is at the moment can be nostalgic and remind her of previous relationships, played by Talia Ryder. Rodrigo performed the song on shows such as MTV Push and Billboard Women in Music, and included it on the set lists for her 2022 Sour concert tour, the Glastonbury Festival, and the 2024 Guts World Tour.