CS4FN (Computer Science for Fun) is a UK-based magazine on computer science aimed at school students. It is produced by Paul Curzon, Peter McOwan and Gabriella Kazai at the School of Electronic Engineering and Computer Science, Queen Mary University of London, England, with support from the EPSRC. The magazine is also supported by the British Computer Society, Microsoft, ARM and Intel. It is printed twice a year and has an associated website with additional articles.