2 Days & 1 Night (Korean: 1박 2일; also known as 1 Night 2 Days; abbreviated as 1N2D) is a South Korean reality-variety show that airs every Sunday at 6:10pm KST on KBS2 beginning August 5, 2007. 1 Night 2 Days used to be one of the two segments (the other segment is The Return of Superman) on Happy Sunday. The episodes are also uploaded with English subtitles weekly on YouTube through KBS World's official channel. The show's current cast members are Kim Jong-min, Moon Se-yoon, DinDin, Lee Joon, Jo Se-ho, and Yoo Seon-ho. The show's motto is "Real Wild Road Variety." Its main concept is to recommend various places of interest that viewers can visit in South Korea. Filming for every new trip is usually done 2 weeks prior to broadcast on KBS2.

1 Night 2 Days has gained much popularity and has garnered high viewer ratings. Along with The Return of Superman, the show's third season helped revive and maintain KBS2 Happy Sunday ratings, beating out competition from other major networks since its first episode.