Tehran Province is the undisputed economic engine of Iran, contributing massively to the national GDP. It hosts over half of the country's industrial sector and is the center for finance, manufacturing, and technology.
* **Business Districts:** The commercial heart stretches from the historic Tehran Grand Bazaar—a sprawling labyrinth of trade that has dictated commerce for centuries—to modern business districts like Abbas Abad, Mirdamad, and the commercial stretches of Valiasr Street. * **Major Industries:** The province's industrial zones (such as those around the Karaj Highway, though Alborz province now shares this border) focus on automotive manufacturing, electronics, textiles, cement, and chemical products. * **Tech & Innovation:** Often referred to as Iran's Silicon Valley, the Pardis Technology Park, located just outside the capital, is an incubation hub for tech startups, nanotechnology, and software engineering.

