JJI Views 5 meanings found JJI can refer to the Shanghai‑based JinJiang Inn investment firm, the Juvenile Justice Initiative in the United States, or the Peruvian town of Juanjui, among other corporate entities. Governmental Juvenile Justice Initiative Regional Juanjui, Peru Business Jim Jess Implements Shanghai JinJiang Inn Investment and Management Company, LTD Jac. Jacobsen Industries, Incorporated