MRO stands for mandal revenue officer he/she is the head of the Mandal Revenue Office and is also known as a Tahsildar.MRO positions in AP are filled through Andhra Pradesh Public Service Commission (APPSC) Group II exam. Any candidates who completed graduation in any subject with atleast 55 percent can apply for the post of MRO.The APPSC MRO exam is by far one of the most prestigious of public service exams that strives to tests your ability for the designation role.