Mosques are spaces that are prepared to be proper for praying and worshipping they are one of the most repeated building types in Muslim countries and consist to be potentially a visual attraction and a landmark in metropolitans. Turkey is rich in term of the mosque design and had its own unique linkage with the ottoman mosque design, on the other hand in the main time the innovation produced can be observed for various architectural forms that immerge to mosque design to create innovative mosque styles that are new interpretation or abstraction of the conventional mosque architectural elements. Moreover, the traditional imitated mosques are using different constructional technologies and building materials that separated them to be within the classification of the traditional ones. In order to classify the styles of the mosques based on a coherent style expressions which were distinguished into looking for two main distances from traditional wise to modern wise.   This article aims to define the contemporary mosques and represent the critic's attempts to create a classification for the contemporary mosque’s expressions based on the style. And based on the approach followed in the mosque design. The paper is qualitative analytical based, demonstrate the appropriate classification for the mosque expressions by looking to the traditional and modernity dimensions. And the categorization of the innovative approach and the conventional ones. analyze the sorting of prominent designs of contemporary mosque architecture in turkey and introduce a contemporary case study. In order to lead for classification and evaluation of the contemporary styles expression and approaches based on the architectural values.