Jizan (Arabic: جيزان, romanized: Jīzān) is a city and the capital of Jazan Province, which lies in the southwest corner of Saudi Arabia. Jizan is situated on the coast of the Red Sea and serves a large agricultural heartland that has a population of 173,919 as of 2022 and over 1.4 million, in the whole Jizan region. As the city is the capital of the region, it has a regional airport as well as the Jizan seaport. The area is noted for its high-quality production of fruits such as mangoes, figs, papayas, plums, and coffee.

Jizan has one of the largest megaprojects market in the kingdom with significant infrastructure projects worth many billions of dollars. Saudi Aramco is building a 400,000 bpd refinery with associated terminal facilities on the Red Sea near the city, scheduled for completion in late 2018.

In the early 20th century, Jizan was a major site for pearl fishing. When World War I began, trade declined, due to ships moving to Al Hudaydah.

Today, ambitious projects in transport, renewable energy, tourism, and agricultural development are taking place in the Jizan region, particularly in Jazan Economic City, including a US$3 Billion aluminum smelter.

Jazan Refinery is a megaproject under construction and owned by Saudi Aramco. The Refinery will process heavy and medium crude oil to create liquefied petroleum gas, sulfur, asphalt, benzene, and paraxylene. It is expected to produce 400,000 barrels per day.

Jazan Port and Jizan Regional Airport serve the city of Jizan.

The inhabitants of Jizan are Arab who mainly follow Sunni Islam with a small Zaydi minority.

2004 : 255,340