Objective: The purpose of this study was to acoustically analyze the effect of voicing and place of articulation on the amount of Voice Onset Time (VOT) in initial Persian oral plosives produced by cochlear implanted children, and to compare the results with hearing controls. Method: 10 prelingual girls who were cochlear implanted about 4.5 years before the test and 10 hearing girls who were about 4.5 years age uttered 8 monosyllabic words, including oral plosives in the initial position followed by a back vowel. VOT values were measured using Praat software and GLM univariate tests were used for statistical analyses. Results: The range of VOT changes in the production of cochlear implanted children was smaller than their hearing counterparts, while the amount of VOT in the production of cochlear implanted children except in voiceless dental plosives was higher than hearing children. Conclusion: It was shown that VOT was significantly correlated with voicing, but it could not be considered as a phonetic correlate of place of articulation and the interaction of voicing and place of articulation. Furthermore, it was confirmed that the status of being cochlear implanted or having normal hearing had significant effect on the amount of VOT.