The present research examined the effectiveness of an 8-week online strengths-based intervention in promoting subjective and psychological well-being of first year university students. The intervention was composed of five modules pertaining to (a) finding and cultivating on character strengths, (b) regulation of emotions and increasing positive emotions, (c) constructive communication, establishing social connectedness and positive relationships (d) effective decision-making and problem solving and (e) achieving flow and practicing gratitude. A total 92 students volunteered to participate in the study. They were randomly assigned to either the intervention or a control group. Students' quality of life (psychological health and social relations domains), life satisfaction, subjective happiness and ontological well-being were measured before and after the intervention. Significant improvements in well-being of intervention group participants were observed over an 8-week period whereas control group participants did not show a significant increase in any of these well-being variables.