This descriptive correlational research was conducted with the purpose of examining the mediator role of future orientation in the relationship between career adaptability and life satisfaction in high school students. The research group consists of 617 students (321 females and 296 males; and age range = 14 to 18) who were ninth, tenth, eleventh, and twelfth graders at the time of the study. Participants' age ranged from 14 to 18. Data related to career adaptability "Career Adapt-Abilities Scale", life satisfaction "Satisfaction with Life Scale", future orientation total score of optimism "Life Orientation Test" and hope "Dispositional Hope Scale" and finally "Personal Information" were conducted. Research data was analyzed through correlation analysis, Confirmatory Factor Analysis (CFA), Mediation Analysis. SPSS and AMOS programs were used for data analysis. The result of this research revealed that future orientation was found to be a full mediator in the relationship between career adaptability and life satisfaction in high school students.