Abstract: In this paper an analysis of scattering of elastic waves by multiple non-coplane interface Griffith cracks in a layered medium is presented. Making use of Fourier integral (transform, the problem is reduced to a set of dual integral equations which can be reduced further to a set of singular integral equations and then solved by numerical methods. As an example, the scattering of SH waves by two cracks in two layered half-space has been investigated in more detail. The features of the scattering waves at th...