Happy Together (Korean: 해피투게더) is a South Korean talk show which first ran on November 8, 2001, on KBS2. It was the most popular show on KBS from 2002 to 2003, and continued its success in two more seasons. Happy Together is one of the most popular shows on Korean free-to-air networks which airs every Thursday at 23:05 (KST). The program celebrated its 200th episode during its third season on July 7, 2011.

Season 1 of Happy Together lasted 4 years from November 8, 2001, to April 28, 2005. It was the most popular season of the Happy Together series, the most popular variety show on KBS from 2002 to 2004, and the most watched on Thursday nights. Season 1 had several different "corners", the most famous being the Metal Tray Karaoke Room, and several other "corners" like Metal Tray Drama, and Do Re Mi "Kong Kong Kong". The early Happy Together was a talk show, and a quiz where the MC's face students for scholarships. Later that was scrapped and the Classroom Talk (책가방토크) and the Metal Tray Karaoke Room were implemented as permanent corners. During the season, the Metal Tray Karaoke Room corner didn't fill up the whole episode, so other games were added to fill the hour. A highlight episode was shown on April 28, 2005, as the finale to Season 1, where ratings were slightly lower than usual.

Slogan: "목요일 밤의 행복한 만남, 해피투게더!" (Thursday nights happy meeting, Happy Together!)

In the Metal Tray Karaoke Room (쟁반노래방), the guests would sing a song (usually a children's carol) in 10 turns, during which they have to sing every line correctly. 3 chance cards are available to ease the singing, and as soon as someone makes a mistake, the metal trays suspended above their heads will drop on them.

The Metal Tray Drama (쟁반극장) featured the two MCs (Shin Dong-yup, Lee Hyori) and two other guests, where they would be divided into two teams (1 MC, 1 guest) and act out a scene from a movie or drama. Usually involving funny antics, anyone who laughs or forgets what to do (known as NG) will be hit by a metal tray.

Do Re Mi Kong Kong Kong (도레미 콩콩콩) was a corner which featured the Do Re Mi 7 Siblings (도레미칠남메) which contained the two MCs (Yoo Jae-suk, Kim Je-dong) and five other guests. They would participate in reciting a children's song using a human-sized keyboard hanging from the ceiling. They are each assigned a note (Do, Re, Mi, Fa, So, La, Ti, Do) and would have four chances to correctly play the song by hitting the corresponding key on the keyboard with their heads. If they are wrong, a group of punishers will hit them with a plastic mallet.

Season 2 was commonly known as Happy Together Friends (해피투게더 프렌즈), where celebrities find their former schoolmates. The program originally began as a pilot which aired in February 2005 titled Friends, hosted by Yoo Jae-suk, Eugene, and Tak Jae-hoon. It eventually combined with Happy Together to become Happy Together Friends. This season wasn't as humorous as the previous season, because most celebrities and schoolmates would usually cry or cherish their time together, greatly reducing the level of laughs. Season 2 ran from May 5, 2005, to June 21, 2007. Season 2 was not as popular as Season 1 but still gained the usual ratings range (10–18%). In Happy Together Friends, 2 celebrities are to find 5 of their schoolmates from a group of 25–40 people. Celebrities had 2 rounds to find their friends, their friends would speak about past events and their interesting stories, where the celebrities would try to clue in on the person. However, the celebrities only see the screen of the MC's and not the audience of schoolmates.

Slogan: "친구가 있어, 행복한 목요일, 해피투게더 프렌즈!" (Because friends are here, Thursday is happy, Happy Together Friends!)