Aims This study aimed to report the perception of parents of children/adolescents with autism regarding the parents’ fear of the pandemic by COVID‐19. Also, to report children's fear about the use of individual protective equipment (IPE) in dental appointments, and the impact on the daily routine during the pandemic. Methods and Results A cross‐sectional study through an open online survey was addressed to parents of children/adolescents autistic, aged between 3 and 18 years. The questionnaire had questions regarding the parents’ fear of the COVID‐19 pandemic, the parents’ perception about the children/adolescents’ fear of the use of IPEs at dental care, and the impact of the daily routine during the pandemic and social impact after the pandemic. Parents' reports on the degree of ASD (mild, moderate, and severe) of the child/adolescent. A total of 1001 responses were obtained. 50.35% of parents had high fear of the pandemic by COVID‐19, 59.34% believe that children/teenagers will be afraid of the dentist's IPE and 61.64% responded that the COVID‐19 pandemic had a high impact on the daily routine of children/adolescents with ASD. Conclusions Most parents reported fear of the pandemic by COVID‐19, that children/adolescents with autism may be afraid of IPE and had a high impact on their daily routine during the pandemic.