The first objective of this scoping review is to identify and map information about instruments used to measure psychosocial and socioeconomic factors associated with level of physical activity (PA) in children and adolescents with asthma that have been reported in quantitative literature, and to report on the construction and validation of these instruments. The second objective is to identify and map psychosocial and socioeconomic issues related to PA level reported in qualitative literature and gaps in the evidence on the relationship between psychosocial and socioeconomic factors and PA level in children and adolescents with asthma.Specifically the review questions are as follows.