2PM (Korean: 투피엠; romanized; Tupiem) is a South Korean boy band formed by JYP Entertainment. The group is composed of six members: Jun. K (formerly known as Junsu), Nichkhun, Taecyeon, Wooyoung, Junho, and Chansung. Originally a seven-piece group, former member Jaebeom (now known professionally as Jay Park) left the group in 2009.

Through the documentary series Hot Blood Men, Korean musician Park Jin-young formed an eleven-member band known as One Day. Eventually, the band was split into the hip hop group 2PM and a similar but independent group known as 2AM. 2PM debuted with the song "10 Out of 10" (10점 만점에 10점, lit. "10 Points Out of 10 Points"), which showcased their acrobatic dance styles. They then achieved their first number 1 single with "Again & Again". Both singles were featured on their first studio album, 01:59PM, which was released in 2009. The band went on to release another Korean album, Hands Up, in 2011. They made their Japanese debut later that year with Republic of 2PM. The group enjoyed significant commercial success with their subsequent albums; Grown (2013), Go Crazy (2014), No.5 (2015), and Gentlemen's Game (2016), each of which peaked within the top 3.

Following touring for Gentlemen's Game, the group took an official hiatus in July 2017 due to mandatory military service. Following the members' discharge, 2PM returned with their seventh studio album Must in June 2021.