This study investigated cattle rustling in rural communities and its implication on security in Mangu Local Government area of Plateau State, Nigeria. The study employed a survey research design. With population comprised of 400 respondents. Clustered random sampling techniques were used to select 150 samples. Data were collected with the help of questionnaires and analyzed using the frequency counts, mean score and standard deviation. It was established that high rate of poverty farmers’ herders conflict sand accumulation of cows is some of the main causes of cattle rustling in the area. The study further revealed that effects of cattle rustling on the area were effects on the household economy, distrust between communities, loss of lives and insecurity among others. Based on the results, it was recommended that more priority should be given to community policing, government and other agencies working in the area to focus on building peace and development, the use of computer microchips should be employed to determine the location of the animals from the rustlers to enable tracking by the security forces.