This was an integrative literature review, guided by the following question: Which social networks support women during breastfeeding? The search in the scientific literature took place in January 2014, and it used the following inclusion criteria: articles written in Portuguese, English and Spanish, published from 2004 to 2013, available on the Latin American and Caribbean Health Sciences Literature (LILACS) and the Medical Literature Analysis and Retrieval System on-line (MEDLINE) databases. Exclusion criteria were: editorials; letters to the editor; monographs; theses and conference or scientific event abstracts, and literature review articles.