"Crying in the Club" is the debut solo single by Cuban-born American singer and songwriter Camila Cabello. It was released as the lead single on May 19, 2017 for her debut studio album The Hurting. The Healing. The Loving. (2017). Its music video premiered the same date. The song was written by Cabello, Sia, and Benny Blanco. It is a mid-tempo tropical pop and dance track.

Cabello previously collaborated with producers Benny Blanco and Cashmere Cat on the latter's song "Love Incredible", recorded in May 2016. Following Cabello's departure from the girl group Fifth Harmony, and after years of writing in her downtime, she began writing songs in earnest for her debut. In February 2017, during a writing session with Blanco, singer-songwriter Sia conceived the concept for a demo, and both composed the song. After Blanco offered her "Crying in the Club", Cabello rewrote the song's bridge and recorded the track. "It had a message about healing through the power of music," she said later, "That theme was a key part of what I wanted for my album."

The song was released on May 19, 2017 to digital music stores and streaming services, following several music collaborations by Cabello, including "Bad Things" with Machine Gun Kelly–which reached the top 10 on several Billboard charts. "Crying in the Club" was serviced to US contemporary hit radio on May 23, 2017.

"Crying in the Club" is a mid-tempo pop and dance track featuring a "subdued" minor-key dance groove and dancehall-inspired beat. Some critics described it as a tropical track. Lyrically, the song contains themes of the healing powers of music and dancing your heartbreak away. The song samples Christina Aguilera's "Genie in a Bottle", written by David Frank, Steve Kipner and Pamela Sheyne. The song is written in the key of F♯ minor, with Cabello's vocals spanning from the low note of E3 to the high note of F♯5. Sia Furler performed backing vocals for the song.

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