Orlu is a city in Imo state, Nigeria. It is also known as the second largest city in Imo state, with Owerri city being the largest and Okigwe the third largest. It is a city where the dominant tribe is the Igbo tribe. Dwellers here generally engage in the Christian religion. The Nigeria Immigration Training School (NITS) in Umuowa and the Technological Skills Acquisition Centre (TESAC) are based in the city.
The permanent site for various industries, State and federal agencies like the Imo State University Teaching Hospital, the State owned Cardboard Industry in Owerri-Ebeiri, the newly built Imo State School of Nursing and Health Technology at Okporo and a host of small and medium size chemical and pharmaceutical companies, the multi purpose Imo International Market, which houses one of the three most influential pharmaceutical markets in West Africa, are based in Orlu.