IntroductionThroughout the transition to motherhood, changes are experienced across a woman's physical, mental, social, and occupational self. Maternal chronic illness adds the complexity of increased healthcare needs and navigating a high‐risk, medicalised pregnancy, birth, and post‐natal period. Literature concerning motherhood transitions in chronic illness generally focusses on the mother's medical health and pregnancy outcomes; little is known about the impacts on women's occupations, balance, and quality of life. Understanding these issues may help support women in a more tailored and holistic way.ObjectiveThis scoping review aims to gather, analyse, and synthesise existing empirical research on occupational engagement and occupational balance as they impact on wellbeing and quality of life in women with a lifetime chronic illness before and during pregnancy and in early motherhood.MethodThe review follows the nine‐stage framework described in the Joanna Briggs Institute Manual for Evidence Synthesis (2020). Five databases were searched: Embase, Medline, PsycINFO, CINAHL, Scopus, and OT Seeker. Data were extracted and examined via content analysis, described in narrative synthesis, summarised into a conceptual framework, and tabulated.FindingsA total of 8,655 papers were discovered on initial search. Following title and abstract screening, 220 full‐text studies were assessed for eligibility, and 46 papers were finally included. Analysis generated four major themes: The Disrupted Transition Journey; Adaptation, Compromise and Choice; Outcomes; and Drawing on What's Available. The themes were conceptualised into a framework to explain how women sought to balance motherhood and illness‐related occupations. Adequate access to information, social support, expert care, and financial resources improved both quality of life and healthcare compliance.ConclusionFindings of this scoping review deepen the understanding of occupational balance during the transition to motherhood in the context of lifetime chronic illness. Healthcare providers and supportive family and friends can use this knowledge to adapt their approach to assisting women with chronic illness on the motherhood journey. These findings may also inform further inquiry into the scope of occupational therapy practice with this population.