The aim of the current study was firstly to examine the effectiveness of Reciprocal Imitation Training (RIT) on a) imitation of object actions and gestures and b) maintenance of these skills in children with Autism Spectrum Disorder (ASD). Secondly, the purpose was to explore the effectiveness of object and gesture imitation teaching with RIT on motor imitation skills, initiating and responding to initiations of joint attention, play and verbal imitation skills, communicative behaviors and vocabulary, and contextually appropriate use of language. The design of this study was Modified Multiple Baseline Design Across Subjects. The study group consisted of three children with ASD. The results of this study showed that for all subjects there was an increase in the object and gesture imitation. Also, the findings showed that RIT increased motor imitation, verbal imitation, and play skills as well as the frequency of initiating and responding to initiations of joint attention, communicative behaviors, and vocabulary. The results are discussed in line with the literature related to teaching imitation in early childhood period.