Abstarct: In this thesis we study domination broadcast in graphs. In chapter 1, we state some elementary concepts which we use for the next chapters. In chapter 2, we study broadcast in graphs and give several properties, bounds and characterizations for this concept. In chapter 3, we study domination broadcast in graphs. In chapter 4, we study domination broadcast in some products of graphs. Finally in chapter 5, we study limited dominating broadcast in graphs which was left as an open prob lem in a recently paper.