Reading anxiety can hinder involvement and performance. This study aimed to present the adaptation and validity evidence of the Reading Anxiety Scale (RAS-20) for parents and guardians. A total of 240 parents and guardians with children aged from eight to 12 years ( M = 9.73; SD = 1.41) took part in the study. A sociodemographic and health conditions questionnaire, the Child Behavior Checklist (CBCL) and the Reading Anxiety Scale (RAS) version for parents and guardians were applied. The results of the confirmatory factor analysis indicated good adjustment rates for the three dimensions assessed by the scale (enjoyment, independence, and difficulty). Convergent validity evidence supported the hypothesis of anxiety as a specific phenomenon, different from general anxiety. The RAS-Version for parents and guardians showed adequate psychometric properties and can contribute to the development of interventions in the clinical, family, and school context.