This paper presents the development of an efficient oil pipeline monitoring and leakage localizer using time domain reflectometer (TDR). Primarily, a pipeline connects two flow stations A and B to convey oil products from flow station A to flow station B. The pipeline used in this project has copper rods running the length of the pipeline and properly terminated at both flow stations and along the right of way of the pipeline, there are calibrations in meters so as to enable the responders to know point of tampering or leakage since the pipeline is buried in the ground. The flow station A has a microcontroller as the central control unit, with pump, time domain reflectometer (TDR) and sound alarm as the output devices. It equally has a start button to serve as the input device. Also flow station B has the same devices as flow station A except pump. In this project, the pipeline was monitored from flow station A to flow station B for possible leakage or cut of the copper rods along the length of the pipeline by vandals or oil thieves. The flow station A sends pulses through the copper rods using time domain reflectometer (TDR) at interval of 30 seconds. Once a cut is made on any of the copper rods surrounding the pipeline, the time domain