Public buses in Sofia

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Sofia Public bus system
Buses on Srebarna Street near the entrance to the Sofia Zoo
Overview
Owner	Stolichna Municipality
Area served	Stolichna Municipality
Locale	Sofia, Bulgaria
Transit type	Bus
Number of lines	99[1]
Operation
Began operation	20 April 1935 (1935-04-20)
Operator(s)	Sofia Bus Transport JSC Sofia Electric Transport JSC MTK Group
Technical
System length	2,380 km (1,478.9 mi)[2]
Average speed	20 km/h (12 mph)

The Sofia public bus system (Bulgarian: Автобусен транспорт София) forms part of the public transport network of Sofia, the capital city of Bulgaria.

In operation since 1935, the system presently comprises 98 routes.