Do or Not (stylized as DO or NOT) is the fourth Japanese extended play by South Korean boy group Pentagon, released by Universal Music Japan and Cube Entertainment.

[2] The EP contains Japanese versions of songs previously released "Do or Not", "Daisy" and "Boy In Time", as well as two original Japanese tracks, "Don't Worry 'Bout Me" and "Dazzling" which were composed by members Kino and Yuto, respectively.

On May 12, Cube Entertainment announced that Pentagon will release their 4th mini album Do or Not in Japan on June 23.

[3] Starting May 13, Pentagon individual images were posted on their official Japan Twitter account.

[4] An audio snippet of the mini album, briefly showcasing each track, was released on June 9.