H-block

H-block or h-block can refer to:

• H engine, with cylinders in an H pattern
• Maze (HM Prison), Belfast, where the prison blocks were built to a uniform H-shaped plan
  • Anti H-Block, 1981 Irish Republican election label
• A type of barrack block found on many RAF airfields, also built to an H-shaped plan
• H-block in aggressive inline skating, part of the frame of the skate

See also

• H-Blockx, German hardcore punk band