The current study was carried out to standardize Academic Motivation scale for Iranian students. This scale was created by Vallerand and his colleagues (1992) on the basis of Deci and Ryan (1985) theory. Population of this study comprised all Iranian students (male and female). 4000 students were selected randomly as a research sample. Findings of Exploratory Factor Analysis revealed that 7 recommended subscales of Vallerand and his colleagues were reduced to three general subscale called intrinsic Motivation, extrinsic Motivation and aMotivation. Findings of Confirmatory Factor Analysis also confirmed these three basic factor structures .Goodness of fit scale which is gained by Confirmatory Factor Analysis indicated a good tit of model with data. Examining construct validity (divergent and convergent) indicated that subscales have an acceptable validity. Also Internal Consistency Analysis (Cronbach alpha) and time reliability buttressed the. notion that this scale has an acceptable validity and Reliability for Iranian students.