Social support and social network concepts are resources applicable to Family Nursing, as they are aimed at improving families' quality of life, and also at promoting, strengthening and maintaining their well-being. This study aimed to reflect on the main social network and social support concepts, relating them with Family Nursing, with a view to their application in nursing research and practice. We conclude that there is a lack of consensus about these concepts and that further criteria are needed for their use. In using Family Nursing, researchers must select the most relevant social network and social support concepts in literature to achieve the proposed objectives.