Reinforced masonry walls are a widely used lateral force resisting system for buildings around the world. These structures, if not correctly detailed to resist earthquake loads, are a main cause of casualties and economic losses, particularly in developing countries. This thesis presents the result of a study whose objective was to apply the seismic fragility methodology to both in-plane (shear) and out-of-plane (transverse) reinforced masonry shear walls to quantify probabilities of exceedance for ASCE 41-06 drifts associated with continued occupancy, life safety, and collapse prevention, performance states. The load-displacement curves (hysteresis) were obtained from quasi-static out-of-plane and in-plane experimental testing by Klingner et al. (2010). In this thesis, that data was applied to obtain the parameters for a widely used ten-parameter hysteretic model. The software SAPWood Version 2.0 was selected for use in this thesis to enable nonlinear modeling of the shear wall and out-of-plane components. An analytical model of the reinforced masonry walls was developed in SAPWood and subjected to each earthquake within a well-known suite of 22 earthquakes. The peak of drifts for each ground motion record was recorded and each earthquake intensity increased over the range interest, i.e. an incremental dynamic analysis (IDA) was performed. Finally, as mentioned the information obtained from the IDA was used to develop fragility curves for the in-plane and out-of-plane walls based on peak story drift limits defined in ASCE 41 for continued occupancy, life safety, and collapse prevention.