Compulsive exercise commonly coexists with eating psychopathology. While the impact of sociocultural influences on disordered eating has been identified in young people, sociocultural influences on compulsive exercise are yet to be systematically synthesized. This systematic review therefore aimed to synthesize literature examining sociocultural influences from peers, family and media on compulsive exercise, to explore the potential importance of such influences on the development and maintenance of compulsive exercise in young people. A systematic literature search was conducted following PRISMA guidelines in PsycINFO, PsycARTICLES, MEDLINE, SPORTDiscus and Web of Science databases up to November 2021. Seven quantitative studies were included (five cross-sectional, two prospective). The review highlighted three key factors underpinning the relationship between sociocultural influences and compulsive exercise in young people: body-related messages from significant others, and unfavorable comparisons with, and pressure to conform to, body image ideals. The findings support the notion that compulsive exercise behaviors and attitudes can be socially determined. However, the limited research with young people necessitates further exploration of sociocultural influences on the development and onset of compulsive exercise in adolescence/young adulthood to develop robust conclusions. It is also crucial that research remains up to date with changing technological influences on exercise behaviors.