A scoping review mapped the cultural and socioeconomic determinants of family satisfaction with intensive care unit (ICU) care worldwide. A comprehensive search of databases such as PubMed (n=68), Scopus (n=475), Embase (n=1,436) and Web of Science (n=138) identified 2,121 articles, after removing duplicates and screening, 1,772 abstracts and 101 full texts were passed, with 17 studies meeting the inclusion criteria. Studies have examined the influence of factors such as religion, race, education, kinship, and prior ICU experience on shared decision making, end-of-life decision making, and caregiver psychological outcomes (anxiety, depression, insomnia). The main findings show that family satisfaction significantly increases the prioritization of patient symptoms, effective communication to support shared decision-making, and the display of compassion. There is a large gap in research from low- and middle-income countries (LMICs). Addressing the family's cultural, socioeconomic, religious, and spiritual needs, including comfort-based interventions, improves perceptions of ICU care. Further studies are needed, especially in LMICs, to understand the diverse factors and develop tailored strategies.