"Knowing Me, Knowing You" is a song recorded by Swedish pop group ABBA, released on 18 February 1977 as the third single from the group's fourth studio album Arrival (1976). The pop and soft rock infused track was written by Benny Andersson, Björn Ulvaeus, and Stig Anderson, and produced by the former two. Featuring Anni-Frid Lyngstad on lead vocals, the track explores the end of a relationship. The B-side of the single was "Happy Hawaii", an early version of what would be the album track "Why Did It Have to Be Me?".
"Knowing Me, Knowing You" was both a critical and commercial success. Music critics praised it as a more mature step for the group both sonically and lyrically wise. The single topped the charts in Belgium, Ireland, South Africa, the United Kingdom (where it became their fifth number one hit on the UK singles chart), and West Germany, and entered the top ten in eight more. In the United States, it charted at number 14 on the Billboard Hot 100, becoming their sixth top-twenty hit.
Retrospectively, "Knowing Me, Knowing You" is ranked amongst critics as one of ABBA's best songs. The song is included on ABBA Gold (1992), and is featured in the Mamma Mia! musical and the film Mamma Mia! Here We Go Again. A Spanish version of the song, "Conociéndome, Conociéndote", was recorded in 1980, and is included on the compilations Gracias Por La Música (1980) and ' (1993).
"Knowing Me, Knowing You" was recorded in 1976 at the Metronome Studios in Stockholm and was released as a single in February 1977, becoming one of the group's more successful hits. The B-side, "Happy Hawaii", was an early version of another ABBA song, "Why Did It Have to Be Me?", with a different lead vocalist and lyrics.
"Knowing Me, Knowing You" was one of the early ABBA songs to deal with the break-up of a relationship. It predates the divorces of the ABBA members as well as further break-up songs to come: "The Winner Takes It All", "One of Us" and "When All Is Said and Done".
"Conociéndome, Conociéndote" is the Spanish-language version of the song. It was included on the compilations Gracias Por La Música in 1980 ' in 1993.
Billboard reviewed the song and described it as a "melodically energetic but sad worded ditty about a romantic breakup." Cash Box called it "a softly rocking record that combines memorable pop hooks in their distinctive reverb-soaked ambiance" and said that it has "a sound agreeable to just about any top 40 station." Record World said that "Its chorus is a mighty hook, capping another superb melody." Caroline Coon for Melody Maker praised the single, noting that while not "as instant-hit sounding as most ABBA hot-shots [...] it grows on you [and it] will become one of their best-loved." Phil McNeill for NME wrote how "Ulvaeus and Andersson are masters of basics" with "a catchy tune, a clean sound and a few elegant flourishes on the harpsichord/backing whisper/reverbed piano."
"Knowing Me, Knowing You" proved to be one of ABBA's more successful singles, hitting #1 in West Germany (ABBA's sixth consecutive chart-topper there and had sold over 300,000 copies there by September 1979), and the United Kingdom, Ireland, Mexico and South Africa, and reaching the top 3 in Austria, Belgium, the Netherlands and Switzerland. It was a top 10 hit in Australia, Canada, France, New Zealand and Norway.
In the United States, "Knowing Me, Knowing You" was released on 25 April 1977 via Atlantic Records. It became ABBA's sixth top 20 single, peaking at #14 on the Hot 100 and reaching #7 on Billboard's AC chart.
In the UK, "Knowing Me, Knowing You" was one of the biggest singles of 1977. It also began a second run of three consecutive #1 singles for ABBA (followed by "The Name of the Game" and "Take a Chance on Me"), the group having had three consecutive #1 hit singles in 1976. As of September 2021, it is the group's third-biggest song in the country with 1.02 million chart sales, made up of pure sales and streams.
"Knowing Me, Knowing You" continues to be regarded as one of ABBA's finest songs. In 2017, Billboard ranked the song number four on their list of the 15 greatest ABBA songs, and in 2021, Rolling Stone ranked the song number two on their list of the 25 greatest ABBA songs.
The music video for "Knowing Me, Knowing You" depicts the band against various colored backdrops singing while facing each other, turning away as a new line is sung. At the end of the video, the band's female members are seen walking away through thick snow. The video was directed by future Academy Award nominee Lasse Hallström, as were most of their other videos.