1 (stylized in all caps) is the first soundtrack and extended play by South Korean rapper and singer-songwriter J-Hope of BTS, released on March 29, 2024, by Big Hit Music.

It contains six tracks and features appearances by his bandmate Jungkook, record producers Benny Blanco and Nile Rodgers, Huh Yunjin of Le Sserafim, and rappers Jinbo, Gaeko, and Yoon Mi-rae.

[7] On March 29, 2024, the EP was released along with the music video of the title track "Neuron" which features rapper Gaeko and Yoon Mi-rae.

[9] On a four-star review of Rhian Daly from NME, the album is described as a bright, brilliant and a tantalizing reminder of J-Hope's multi-faceted talents.

1 entered the Billboard 200 at number five, marking J-Hope's highest entry on the chart and making him the first South Korean solo artist to have two top-ten albums.