Cultural adaptation can be described as the systematic modification of evidence-based treatments, in such a way that they become more compatible with the cultural patterns, meanings, and values of the participants receiving them. Most positive psychology interventions (PPIs) that have been introduced in the past two decades were developed by western scholars. There is a growing number of PPIs conducted in non-western countries as well as an increased awareness of the need for cultural sensitive interventions among populations with a multi-ethnic background in western countries. Therefore, it is important that psychological interventions are adapted to the different cultural backgrounds of populations, in order to increase their efficacy. This presentation provides guidelines to make positive psychology interventions more sensitive towards non-western populations. These guidelines build on previous ones that describe the cultural adaptation process of psychotherapy and cognitive-behavioral therapy and will focus on aspects during the diagnostic, developmental, implementation, and evaluative stages of evidence-based interventions that aim to increase positive feelings, behaviors, and cognitions.