Shared decision making is a concept essential to establishing meaningful goals of care that reflect one’s preferences, values, beliefs, culture, and quality of life. This rapid review considered shared decision making from the perspective of seriously ill or medically complex children receiving inpatient palliative or end-of-life care, where shared decision making is made on behalf of and in the child’s best interest. A total of 118 articles were screened, resulting in the selection of 12 articles using a systematic process. Emergent themes noted and discussed include the roles of family and clinicians, explorative communication, transparency, cultural implications, and ethical challenges.