A large part of Arabia-Eurasia plate convergence is accommodated within wide deforming zones in Iran. Seismicity in these zones is high and magnitude M≥6 earthquakes occur frequently. We use broadband, 3-component waveforms from in-country seismic networks to determine ~400 seismic moment tensors of 8 M6+ crustal mainshock-aftershock sequences from 2010 to 2019. Our dataset is unique with over 80% of events in the Mw 3.6-4.8 range requiring regional data. Main shocks are the 2013 Khaki (M6.5), 2014 Mormori (6.2), and 2017 Ezgeleh (7.3) earthquakes in the Simply Folded Belt of the Zagros, the 2012 Ahar (6.4) doublet in NW Iran, the 2017 Fariman (6.0) event in NE Iran, the 2010 South Rigan (6.5) and 2017 Hojedk (6.0) earthquakes in Central Iran, and the 2013 Minab (6.2) event above the Makran subduction zone. All sequences have shallow (≤15 km) main shocks and over 90% of all aftershock depths are <15 km. We find no significant difference in aftershock depth between Zagros, Iranian Plateau, and Makran events. Magnitude differences between main event and largest aftershock range from 0.0 (Hojedk) to 1.0 (Ezgeleh, Fariman) with four sequences (Mormori, Ahar, South Rigan, Hojedk) having two or more similarly sized main events. Interestingly, all sequences except Ahar had immediate foreshocks or increased preceding seismicity. The deformation style is primarily thrust for the Zagros, Fariman and Hojedk sequences and primarily strike-slip for the Ahar, South Rigan, and Minab sequences consistent with their location and role within the collision zone; all sequences show varying degrees of transpression. The Ezgeleh M7.3 event is the largest recorded earthquake in the Simply Folded Belt. It ruptured in an oblique dextral-thrust motion on a shallow NE dipping fault in the crystalline basement. Immediate aftershocks are mainly at its southern up-dip rupture edge, mostly have thrust mechanisms and do not exceed M5.0. The largest aftershock (6.3), one year after the main event and strike-slip, occurred just south of them. A second strike-slip cluster (up to M6.0) is about ~40-km SE of the main event. In addition, less than 2 months after the main event and ~100 km to the south, a series of thrust earthquakes (up to M5.5) started in the foredeep region. The Ezgeleh event depths indicate rupture in the sedimentary cover and crystalline basement.

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