Adolescents have been overlooked in global public health initiatives as this period is generally considered to be the healthiest in an individual’s life course. However, the growth of the global adolescent population and their changing health profles have called attention to the diverse health needs of adolescents. The increased attention toward adolescent health has accentuated existing gaps as global health reports have emphasised that there is a continued need for valid and reliable health data.

In this context, evidence has shown that mental health issues constitute one of the greatest burdens of disease for adolescents. This integrative review aims to unpack the meaning of mental wellness among adolescents and its associated constructs by analysing and synthesising empirical and theoretical research on adolescent mental wellness. In doing this, we will develop a working defnition of adolescent mental wellness that can be used to develop an instrument aimed at measuring adolescent mental wellness.