Social network and social support are phenomena suggested to be of importance to successful recovery from myocardial infarction. However, very few studies have been carried out, especially among the elderly, focusing on their social network and its ability to provide adequate support after myocardial infarction. The aim of this study was to examine elderly persons' social network and need for social support three months after their first myocardial infarction. The sample consisted of 128 persons between 65 and 94 years of age who answered a questionnaire. The results showed that the subjects, even the oldest ones, had an available social network and that they were satisfied with the support it provided. There was an increased need for social support after the myocardial infarction, especially for emotional support and appraisal, but also for instrumental aid and information. Despite these positive results indicating that elderly persons with myocardial infarction have a social network, whose members provide them with support, there may be a need for support also from persons outside this network. Assessment of social network characteristics and the need for social support as well as the provision of adequate information about additional support networks are important tasks for all health professionals.