The Supports Intensity Scale (SIS) was translated into French. The French version was then validated using a sample of 245 persons with intellectual disabilities between the ages of 16 and 75 years. The internal consistency was excellent (0.98). Correlations with age and levels of intellectual disabilities were evidence of good construct validity. These psychometric results replicate the psychometric characteristics reported on the original SIS version. Our findings show that the SIS-F is a good measure of intensity of support needs of individuals with developmental disabilities.