The Armenian Highlands, a tectonically active segment of the Arabia-Eurasia collision zone, exhibit widespread Quaternary volcanism, rapid uplift, and intense seismicity. However, the lithospheric processes driving these phenomena remain poorly understood. We present the first P- and S-wave body-wave tomography model of Armenia's crust and uppermost mantle, derived from regional earthquakes recorded by both permanent and temporary seismic networks. Our model reveals that beneath the Armenian Highlands, the crust is underlain by a pronounced low-velocity anomaly in the uppermost mantle (40яkm depth), indicative of asthenospheric upwelling and melt generation. This anomaly spatially correlates with monogenetic volcanic fields (e.g., Gegham and Syunik), supporting magma ascent through thermally weakened conduits. The lithosphere adheres to a crme brle rheological model, characterized by a seismogenic brittle layer (1025яkm depth, marked by high-velocity anomalies) atop a ductile lower crust and uppermost mantle (with negative Vp and Vs anomalies). Beneath the Gegham Plateau, a thinner brittle high-velocity layer coincides with elevated seismicity at 1020яkm depth, suggesting magmatically induced earthquakes rather than purely tectonic strain release. Collectively, this work establishes a framework for understanding collision-related magmatism in comparable orogens.