In this study the progressive collapse resisting capacity of structures with various tilted angles was evaluated and their performances were compared with those of corresponding regular structures. As tilted analysis model structures, 7- and 14-story moment-resisting frames and 36-story tubular/diagrid structures were designed. The progressive collapse resisting capacities of regular and tilted structures were evaluated by nonlinear static analyses. According to the analysis results, the progressive collapse resisting capacity of the moment-resisting frames increased as the inclination angle increased due mainly to the added steel tonnage required to resist the overturning moment induced by the inclination. Similar results were observed in the tubular/diagrid structures. It was also observed that in the regular structures the plastic hinges formed limited to the bays from which a column was removed, whereas in the tilted structures the plastic hinges were spread to the nearby bays.