  Recently G. Bhattacharyya, S.Y. Song and R. Tanaka began to study Terwilliger
algebras of wreath products of one-class association schemes. K. Kim determined
the structure of Terwilliger algebras of wreath products by one-class
association schemes or quasi-thin schemes. In this paper, we study Terwilliger
algebras of wreath products by $3$-equivalenced schemes.
