MAPNA Group (Persian: گروه مپنا) is a group of Iranian companies involved in development and execution of thermal and renewable power plants, oil & gas, railway transportation and other industrial projects as well as manufacturing main equipment including gas and steam turbines, electrical generator, turbine blade and vane, HRSG and conventional boilers, electric and control systems, gas compressor, locomotive and other pertinent equipment.

MAPNA was founded in 1993 with the initial aim of becoming a general contractor for thermal power plants but evolved and diversified its business lines and capacities to other industries two decades after its establishment.

The group is the first and leading Middle East-based general contractor of thermal power plants in MENA region.

Historically, large scale industrial installation in Iran had been supplied by foreign companies on a turn-key basis.

MAPNA is the largest contractor for steam, gas and combined cycle and renewable power plants in Iran.

MAPNA was the fourth largest enterprise in Tehran Stock Exchange by June 2010, with a market capitalization of $2.6 billion.

[8][10] The division also includes SEPAHAN Equipment Manufacturing Co. and MAVADKARAN Co.[8] Alborz Turbine Power Plant Engineering and Support Co. was founded in 2009 as a service provider.

The oil and gas division was created to extend the group's activities into petroleum plant construction, related engineering and consultancy and manufacturing.

MAPNA also runs a joint venture with French Faiveley Transport (part of Wabtec since 2015), manufacturing break systems.