This essay explores modern manifestations of ‘eclecticism’ in contemporary mosque architecture. In architectural contexts, the term ‘eclecticism’ often refers to a design phenomenon notably employed in the 19th century that incorporates a fusion of diverse architectural elements borrowed from a wide array of historical and stylistic sources and cultural traditions to achieve a unique aesthetic or functional purpose. The concept was widely dismissed – along with stylistic and historicist forms of architecture – with the rise of modernist architecture in the 20th century for its perceived superficiality, lack of coherence, authenticity, and contextual sensitivity. Still, in contemporary architecture, eclecticism manifests in some forms, albeit with new interpretations and applications, nuanced around globalisation and cross-culturalism. A case in point can be found in contemporary mosque architecture. Historically, mosque architecture has been shaped by the migration of ideas through cultural exchanges via travel, trade, and conquests. However, eclecticism was not a commonly used approach in the historical development of mosques. With the increasing interconnectedness of global cultures, contemporary mosque architects now draw from a wide array of design influences, blending new visual and formal languages with traditional architectural conventions. This has frequently sparked debates over the visual and formal identity of contemporary mosques. Those included questions about contextualization, appropriation of architectural elements, typological distinction, environmental sensitivity and authenticity—echoing concerns about 19th century eclectic architecture. More recently, the advent of AI image generation has provided architects with a powerful tool to explore diverse design approaches. AI tools can blend various architectural styles and elements by drawing from extensive datasets, including historical and contemporary buildings, cultural motifs, and design philosophies. Such globalized and technological atmosphere has provided a fertile ground for the resurgence of eclecticism within contemporary mosque architecture. Against this backdrop, this essay will investigate two interrelated threads. The first thread examines eclecticism in contemporary architecture through a review of literature, historical precedents, and its modern interpretations. The second thread examines the manifestation of eclecticism in contemporary mosque architecture. This thread will involve a visual analysis of case studies of contemporary mosques, including AI generation via Midjourney platform. The essay concludes with speculations on the future trajectory of mosque architecture, pondering on how the role of AI image-generated eclecticism might impact how its typological identity might evolve.