Obsessed (Olivia Rodrigo song)

"Obsessed" (stylized in all lowercase) is a song by American singer-songwriter Olivia Rodrigo from Guts (Spilled), the 2024 deluxe edition of her second studio album, Guts (2023). Rodrigo wrote it with Annie Clark (also known as St. Vincent) and its producer, Dan Nigro. Geffen Records released it as a single alongside the deluxe edition on March 22, 2024. A rock, pop rock, dance-rock, pop-punk, and power pop song with punk rock, grunge, and pop metal influences, "Obsessed" details Rodrigo's jealousy and preoccupation with her partner's ex-girlfriend.

Music critics believed "Obsessed" achieved an edgier sound than Rodrigo's previous output and directed praise towards its upbeat nature and lyrics. In the United Kingdom, the song peaked at number 10 on the UK singles chart and became Rodrigo's eighth top-10 single. It reached the top 20 in Australia, Canada, Ireland, and the United States. "Obsessed" received a platinum certification in Australia and silver in the United Kingdom.

Mitch Ryan directed the music video for "Obsessed", which depicts Rodrigo facing her partner's ex-girlfriends in a beauty pageant and performing the song in an adjoining room. She included it on the set list for her 2024–2025 concert tour, the Guts World Tour, where she sang it while spinning around and played a guitar solo. These performances received positive reviews alongside comparisons to 1990s rock artists, and the song attained viral popularity on video-sharing service TikTok.