Domination in graphs has been an extensively researched branch of graph theory. A set S⊆V is said to be the dominating set of graph G if for every v∈V-S there exists a vertex u∈S such that uv∈E. The minimum cardinality of vertices among the dominating set of G is called the domination number of G denoted by γ(G). The main object of this paper is to study the domination number of some networks such as triangular belt networks TBn, alternate triangular belt networks ATBn and restricted square of bistar networks Bn,n.