A set S ⊆ V (G) is a liar's dominating set (lds) of graph G if |NG[v]∩S| ≥ 2 for every v ∈V (G) and |(NG[u]∪NG[v])∩S|≥ 3 for any two distinct vertices u, v ∈ V (G). The liar's domination number of G, denoted by _(γLR)(G), is the smallest cardinality of a liar's dominating set of G. In this paper we study the concept of liar's domination in the join, corona, and lexicographic product of graphs.