Many countries are experiencing a dramatic increase of Mexican immigrants in recent decades, especially the United States. It is essential that professionals understand the cultural expectations and autism spectrum disorder (ASD) diagnostic and intervention practices in Mexico to be better prepared to meet the needs of this population. In fact, immigrant children from Mexico face significantly more educational and mental health disparities than other immigrant populations. The purpose of this paper is to describe a survey of professionals working in Mexico regarding their ASD diagnostic and screening practices. The survey items were designed to elicit meaningful information regarding the ASD diagnostic and intervention practices in Mexico. This level of awareness and knowledge about current practices in Mexico is critical for supporting parent-professional collaboration during the ASD educational identification process in the United States as well as other countries with populations of Mexican immigrants.