The 2012 FKF Division One was the inaugural season of FKF Division One and the 49th second division season since it began in 1963. It began on 3 March with Kariobangi Sharks and Congo JMJ United in Zone A and on the same date with Kakamega Homeboyz and in Zone B, and ended on 18 November with Nairobi Stima and MOYAS in Zone A and on the same date with Timsales and Yanga in Zone B. Since the league had 19 teams left, in accordance with an FKF ruling, this meant that the 16th-placed team was also to be relegated according to the rules of the league.