Near-fault ground motions have caused much damage in the vicinity of seismic sources during recent earthquakes. These ground motions come in large varieties and impose high demands on structures compared to “ordinary” ground motions. Recordings suggest that near-fault ground motions are characterized by a large high-energy pulse. This impulsive motion, which is particular to the “forward” direction, is mostly oriented in a direction perpendicular to the fault, causing the fault-normal component of the motion to be more severe than the fault parallel component. The main objective of the present study is to acquire quantitative knowledge on the effects of Near-Fault ground motions on the response of reinforced concrete frame structures. To achieve this goal a set of generic R/C frame structures with 5 story, 10 story and 20 story height are used to evaluate seismic responses of R/C frame structures close to the faults. These frame models are designed according to the “Weak beam – Strong column” concept, and members strengths are tuned such that simultaneous yielding occurs at the beam ends (and the column bases) under the SRSS shear force pattern. The results demonstrated that the story shear force distribution over the height of the frame structures with a period longer than the pulse period show very differently from the frame structures with a shorter period. For the frame structures with a period longer than the pulse period, the distribution of story shear forces over the height of the structure differ significantly from the design distribution and causes the shear forces in middle stories to reach the story shear capacities very fast and this leads to early yielding in this stories. But for the frame structures with a period shorter than the pulse period the distribution of story shear forces over the height of the structure is relatively close to the design distribution and causes the shear forces in lower stories to reach the story shear capacities first and leads to early yielding in bottom stories.