Fortran 5 was an electronic music band active during the 1990s.
The band were made up of members David Baker and Simon Leonard, who had previously worked together on the music project known as I Start Counting. Around 1990, they had begun recording new material, and realised that the new music had a different sound compared to their previous electropop style. They decided to rename their project Fortran 5 in order to give their new dance/techno style a fresh start. The new project also involved the duo collaborating and working with a number of other artists. These included Kris Weston of The Orb, and Rod Slater from Bonzo Dog Doo-Dah Band.