Autism spectrum disorders (ASDs) are characterized by difficulties with reciprocal social interactions, deficiency in verbal and non-verbal communication, and restricted, repetitive and stereotyped patterns of behavior and interest; one of these characteristic behaviors is food selectivity. The objective of this study was to perform a systematic review of the literature published between 1970 and 2013 concerning this eating behavior. The articles identified were analyzed in terms of: sample size, study design, and criteria for assessment and intervention, as well as the results, level of evidence and grade of recommendation.The main search was conducted in Medline, although other databases were also consulted (Cochrane Library, Scielo, ScienceDirect and Embase). Regarding the methodological quality of the articles retrieved, almost all had limited statistical validity for some of the following reasons: lack of a control group and/or definitions of inclusion criteria, analysis being based on single individuals, heterogeneous groups including different ages, small sample sizes, or failure to consider phenotypic variability between individuals or alternative explanations, as well as multiple meanings being applied to the term "food selectivity". Despite all this, there is empirical evidence and an overall scientific consensus supporting an association between food selectivity and ASDs.