289 Of the President of the Republic of Azerbaijan on February 27, 2014, as a legal successor to Baku Metro and Azertunelmetrotikinti Joint Stock Company.

During the final decades of the Russian Empire the port city of Baku became a large metropolis due to the discovery of oil in the Caspian Sea.

After World War II, the population passed the one million mark, a requirement of Soviet law for construction of a metro system.

On November 6, 1967, Baku Metro became the Soviet Union's fifth rapid-transit system when the first 6.5 kilometres (4.0 mi) of track and a depot were inaugurated, in honor of the fiftieth anniversary of the October Revolution.

This was inaugurated in three stages: Ulduz (1970) and Neftçilər (1972), followed by Ahmedli (1989) and finally Hazi Aslanov (2002), completing the first line.

In 1993, the first stage of the transfer station Jafar Jabbarli came in operation, but the end of the Soviet Union, political unrest, the First Nagorno-Karabakh War and the financial collapse which followed effectively paralyzed any construction attempts in Baku.

[10] Construction of the intermediate section of the Green Line, between Khatai and Hazi Aslanov along Nobel Avenue, began in August 2013 by a French–Ukrainian consortium.

[6] Most recent updated expansion plan consists of 5 lines, 77 stations and about 119 km total length of network.

Baku Metro Closed Joint-Stock Company embracing such important areas like subway operation and construction, has the following structural units:[13]

There is a one-stop second line that operates separately between Cəfər Cabbarlı (essentially different platforms within the same station as May 28) and Şah İsmail Xətai, a shuttle service using only one of the two tracks due to low demand.

Like many other former Soviet systems, most of the stations of the system are exquisitely decorated; many features advanced Soviet motives in artwork (including mosaics, sculpture and bas-reliefs) and architecture such as those of progress and international culture, whilst others focus on traditional Azeri culture and history.

The system works on a flat fare of 50 gapiks (0.50 AZN) per trip, following a price hike on July 1, 2024.

Some Baku residents were reportedly unhappy with the price hike, citing the age of the metro system's infrastructure.

[citation needed] BakuCard is a single Smart Card for payment on Baku Metro and BakuBus.

[19][20] As of the beginning of 2020, 81-717/714 (including later modifications .5 .5B and .5M) and their modernized version 81-717M/714M, 81-760B/761B/763B "Oka" and 81-765.B/766.B stock trains are operating on the metro.

[21] During the refurbishment, the front car is fitted with a new fibreglass cab end similar to those operating on the Prague Metro.

[23] Later, the Baku Metro decided to purchase three five car "Oka" type trains with modified carriages fitted with through passage gangways.

But, quickly abandoned the project and switched focus to a redesigned "Oka" type train built by Metrowagonmash and Alstom.