There are at least 2 groups under name Boikot

1) Boikot is a Spanish left-wing punk/rock group.
The group started in 1987 singing in bars and private locals. After doing a pair of adjustments in the formation of the group they recorded two albums with the label Barrabas. They were themselves doing acquaintances playing in Madrid, until in the year 1995 they break with the seal Barrabás and they decide to start their own production business BKT. They launched two disks more, Cría Cuervos and Tu Condena, and they played in diverse festivals of rock as Festimad or Metaliko Rock. After this they decided to do a trilogy called La Ruta del Ché, that would be composed of three disks that count the history of Che Guevara and engravings while they were on tour in some countries as in Cuba, Mexico, or Argentina.

2) Polish punk-hard core group, sometimes spelled BOiKOT (in capital letters with small "i") that released few cassettes in early '90. Titles: "Stany odmiennosci", "Przeminal juz raj na ziemi"