JEF United Chiba , full name JEF United Ichihara Chiba and also known as JEF Chiba , is a Japanese professional football club based in Chiba, capital of Chiba Prefecture. They currently play in the J2 League, Japanese second tier of professional football.

Chiba is the capital city of Chiba Prefecture, Japan. It sits about 40 kilometres (25 mi) east of the centre of Tokyo on Tokyo Bay. The city became a government-designated city in 1992. In June 2019, its population was 979,768, with a population density of 3,605 people per km2. The city has an area of 271.77 square kilometres (104.93 sq mi).