"911" is a song by American recording artist Lady Gaga, from her sixth studio album, Chromatica (2020). It was released as the album's third single on September 18, 2020. The song is a Euro disco, synth-pop and electropop song. "911" is about the antipsychotic medication Gaga takes. It was written by Gaga with Madeon, BloodPop, and Justin Tranter, while Madeon, BloodPop, and Benjamin Rice produced it.
The music video shows Gaga surviving a near-deadly car accident and the thoughts that follow. It contains references to the movies The Color of Pomegranates and 8½.