Klaus Mitffoch was a Polish rock group founded in 1979 in Wrocław by Lech Janerka, Krzysztof Pociecha and Kazimierz Sycz.^[1] Soon joined by Wiesław Mrozik and Marek Puchała (who replaced Sycz on drums), the band gained a large underground following. They recorded their first single Ogniowe Strzelby/Śmielej in 1983 and their debut album Klaus Mitffoch in 1984.^[1] It received several awards and is considered one of the most important albums in the history of Polish rock music.^[1][2]

The band disintegrated in 1984.^[2] Janerka went on to a long-term solo career; Pociecha collaborated with Janerka on two more albums. From 1986 to 1989 Mrozik and Puchała, joined by Paweł Chyliński (guitar/vocals), Jacek Fedorowicz (bass guitar) and Zbigniew Kapturski (guitar/vocals), continued to perform under the name 'Klaus Mit Foch'; this latter line-up released the album Mordoplan in 1988.^[2]

• Lech Janerka (bass guitar/vocals)
• Krzysztof Pociecha (guitar/backing vocals)
• Wiesław Mrozik (guitar/backing vocals)
• Marek Puchała (drums/backing vocals)

• Klaus Mitffoch (1984)
• Mordoplan (1988, as Klaus Mit Foch)

• Ogniowe Strzelby / Smielej (1983)
• Jezu jak się cieszę / O głowie (1983)
• Siedzi / Tutaj wesoło (1984)

• "Klaus Mitffoch". WIEM Encyclopedia (in Polish). Archived from the original on 2016-03-03. Retrieved 2008-02-06.
• Gnoiński, Leszek (2001). Encyklopedia Polskiego Rocka (in Polish). In Rock. pp. 285–286. ISBN 83-86365-08-0.