Various aspects of parent responsiveness are associated with child outcomes, such as play, language, and social development. However, behavioral coding methods used to measure parent responsiveness vary widely, making comparison of results across studies difficult. The purpose of this scoping review was to summarize current behavioral coding methods used in measuring parent responsiveness to children with autism or elevated likelihood of autism, synthesize the reported metrics used, and highlight the strengths and weaknesses in the reporting standards of available literature. A total of 101 articles met criteria for the review and were analyzed for metrics in demographics, coding system development and accessibility, characteristics of measured responsiveness, reliability, and validity. Results revealed variations in observational procedures, forms of measurement, and specific aspects of responsiveness measured. Details necessary for study replication or extension often were missing, such as parent demographics, clear definitions of parent responsiveness, and coder training procedures. The scoping review results reflect the wide variety of behavioral coding systems used and the inconsistent reporting in published literature on this topic. A case for a best practice model for behavioral coding metrics and reporting standards within parent responsiveness is presented in the discussion.