Reminiscence therapy is a structured intervention that involves discussing past experiences with older adults to improve their psychological well-being. This therapeutic approach leverages the richness of an individual’s life history, fostering a sense of identity, self-worth, and continuity. Through guided discussions, storytelling, and the use of prompts like photographs, music, or personal mementos, reminiscence therapy helps individuals recall and reflect on meaningful memories. This therapy is particularly beneficial for older adults suffering from depression, anxiety, or dementia. By engaging in reminiscence, these individuals often experience enhanced mood, reduced feelings of loneliness, and improved cognitive functioning. The process of recalling positive memories can evoke a sense of accomplishment and joy, counteracting negative emotions and fostering a more positive outlook on life. In group settings, reminiscence therapy also promotes social interaction and bonding among participants, reducing social isolation. Trained therapists or facilitators guide the sessions, ensuring that the discussions remain positive and supportive, even when addressing difficult or painful memories. Research indicates that reminiscence therapy can be a valuable non-pharmacological intervention in geriatric care. It not only supports emotional and mental health but also strengthens interpersonal connections, ultimately enhancing the overall quality of life for older adults. This chapter provides an overview of the psychosocial aspects of reminiscence therapy in older adults.