The concept of resiliency has been used in the social sciences for 30 years. It refers to the ability to bounce back, to grow, and to learn when confronted with a situation perceived as a challenge. Family resiliency is a newer concept and there is no consensus on its definition. A concept analysis, based on Walker and Avant’s approach, was used to help define family resiliency. First, the concept was distinguished from coping and invulnerability. Antecedent, consequences and attributes of family resiliency were then identified. In a broad sense, families should be facing a challenge for family resiliency to develop. Family development and learning following the suicide of one of its adolescent members seem intricately linked to family resiliency. The characteristics of family mourning following the suicide of an adolescent are presented after the concept analysis in order to help understand this potential link.