Interpersonal Perception is the manner in which people interpret and comprehend others thoughts, feelings, and actions plays an essential role in influencing Mental Well-being. Accurate perception cultivates empathy, trust, and social support, whereas inaccurate perception can lead to conflict, isolation, and psychological discomfort. This research paper investigates the influence of interpersonal perception on mental health, highlighting its importance in both personal and therapeutic settings. To answer this research question, Quantitative method was employed using correlational research design and standardized psychological scales measured level of interpersonal perception and mental well-being among 80 Adults participants selected through random sampling technique. The results emphasize a notable connection between how one perceives others and their mental well-Being. People who are more accurate in understanding the feelings and motives of others indicated better emotional stability, deeper social relationships. These findings imply that improving interpersonal perception abilities could be an important factor in fostering mental well-being and creating successful psychological strategies.