Coupled shear walls are frequently used in height rise buildings to overcome lateral loads resulting from wind and earthquakes. During earthquakes, structures are exposed to cracking and to some extent yielding of structural members leading to the necessity of performing nonlinear structural analysis. A nonlinear model for the analysis of coupled shear walls under earthquake ground motion is presented in this paper. The model is based on elasto-plastic behavior of concrete in compression and takes into consideration the cracking process in tension. Real steel model is used such that steel reinforcement is presented by nonlinear bar elements. A simple bilinear stress-strain curve, reflecting the strain-hardening, is employed for steel reinforcement. The model is incorporated into a computer code to perform the required computations resulting in the time history of displacements, stresses, and cracking pattern at each time increment. The results of analysis of walls with practical dimensions are presented to verify the capability of the model and compared to that of linear elastic analysis. Good agreement is observed when comparing the results of proposed model and developed computer program to that of previous experimental results found in literature.