Sudden cardiac arrest is common and is one of the leading causes of death in the western world, and the sudden loss following cardiac arrest may have a significant impact on bereaved family members' health. Therefore, the aim of this study was to describe symptoms of prolonged grief and self-reported health among bereaved family members of persons who died from sudden cardiac arrest, with comparisons between spouses and non-spouses. This was a cross-sectional observation study with 108 adult family members who completed a questionnaire. A fifth of the family members reported prolonged grief, and problems with self-reported health were common, especially regarding anxiety. Spouses reported more problems with prolonged grief and self-reported health compared with non-spouses. The risk of these family members developing prolonged grief and health problems should be recognized, and professional support should be offered.