The Abdul Sattar Edhi Line, formally named the Orange Line (Urdu: راہ نارنجی) is a 4 km (2.5 mi) bus rapid transit line of the Karachi Metrobus under-construction in Karachi, Sindh, Pakistan. The expected daily ridership is estimated at 50,000. Line goes from Board office to Gulshan-e-Zia (Orangi Town).

History
Originally named the Orange Line, construction began on June 11, 2016 and is the smallest of the five line's spreading over 4 km with only four stations. The line will have the capacity to carry up to 50,000 passengers daily with a station after every kilometer. The line begins from AO Chowk Station on the Green Line and extends to TMO Office in Orangi. On December 14, 2016, the Government of Sindh renamed the Orange Line after the late philanthropist Abdul Sattar Edhi, in recognition of his services to the poor.