The Aab-e-Gum derailment occurred on 17 November 2015 at , Balochistan, Pakistan when the Jaffar Express passenger train derailed. Twenty people were killed and 96 were injured.
The Jaffar Express, travelling from to , derailed at . Four carriages were derailed. At least twenty people were killed and 96 were injured, including about a dozen with critical injuries, and 33 with serious injuries. Both train crew were amongst the victims. The seriously injured were airlifted to hospital in Quetta by Pakistan Army Mil Mi-17 helicopters.
The cause of the accident is under investigation by Pakistan Railways. Officials have stated that the trains' brakes failed. A survivor of the accident alleged that the train was allowed to proceed with a known fault in its braking system.