BKX may refer to:
The BK XXL line of sandwiches is a family of larger, 1/2 pound double cheeseburgers sold by the international fast-food restaurant chain Burger King in the European and Middle Eastern markets.
BK Chicken Fries are a fried chicken product sold by the international fast-food restaurant chain Burger King.
Boxing is a combat sport in which two people wearing protective gloves throw punches at each other for a predetermined set of time in a boxing ring.
The Boxer Rebellion, Boxer Uprising or Yihequan Movement was an anti-imperialist uprising that took place in China between 1899 and 1901, towards the end of the Qing dynasty.
BKN, or Bohbot Kids Network (also BKN Kids), were syndicated blocks of animated TV series owned by Bohbot Communications and its subsidiaries or successors.
BKV Zrt. (Budapest Transport Plc. – the abbreviation BKV stands for its earlier name Budapesti Közlekedési Vállalat; Budapest Transport Company, occasionally used up to these days) was established in 1968 as the unified public transport company of Budapest, with the merger of the companies responsible for the different means of public transport: tram and trolleybus operator FVV, bus operator FAÜ, suburban railway operator BHÉV and riverboat operator Hajózási Vállalat.
A Belinsky-Khalatnikov-Lifshitz (BKL) singularity is a model of the dynamic evolution of the Universe near the initial singularity, described by an anisotropic, homogeneous, chaotic solution to Einstein's field equations of gravitation.
Bollklubben Häcken, also known as BK Häcken or simply Häcken, is a Swedish professional football club based in Gothenburg.
The BK virus is a member of the polyomavirus family. Past infection with the BK virus is widespread, but significant consequences of infection are uncommon, with the exception of the immunocompromised and the immunosuppressed.