Acorn Computers is a computer company founded in Cambridge, England in 1978.

It is well known in the UK for developing computers such as Acorn Electron, BBC Micro, and Acorn Archimedes. BBC Micro is often compared to Apple in the United States because it dominated the UK educational computer market in the 1980s and early 1990s.

The company was split into several companies in 1998, but played an important role, including the development of RISC personal computers. The former Acorn divisions are still operating independently, and ARM Holdings’ ARM processors are particularly world-famous.