This research is an attempt to introduce and operationalize a new concept of proxy diplomacy by exploring how some nations, in this fast changing world, are evolving some effective ways of enhancing their interests and foreign policy objectives in areas in which they do not have vital interests, but which are worth intervening in. To do this, the researcher established Angola as the theater of the practice of proxy diplomacy, and the United States, the Soviet Union, South Africa and Cuba as actors. It is further established that the United States and the Soviet Union actually practice proxy diplomacy by deputizing South Africa and Cuba, respectively, to enhance their interests in Angola.