Autism Spectrum Disorder (ASD) encompasses a range of early-onset social communication deficits and repetitive sensory-motor behaviors, influenced not only by a robust genetic component but also associated with cognitive factors. Individual with ASD often exhibit challenges in goal-directed behavior, facing difficulties in planning and executing tasks with purpose and intentionality. Prospective memory (PM) is an essential cognitive ability for daily functioning contributing in goal-directed behavior and the development and maintenance of independence. This study aims to investigate PM in adults with ASD, addressing a research gap that has predominantly concentrated on PM among ASD children. Additionally, the research emphasis on exploring emotional regulation rather than emotional experience among adults with ASD. Emotional regulation refers to the ability to manage and regulate emotions effectively and difficulties with emotion regulation may in turn impact ASD's ability to perform tasks that require Prospective memory. The study involved 87 participants, with 43 diagnosed with ASD and 44 in the non-ASD control group, aged between 16 to 28 years. The Prospective/Retrospective Memory Questionnaire (PRMQ) and the Emotion Regulation Questionnaire (ERQ) were utilized as measurement tools. The Analysis of ANOVA revealed that adults with ASD exhibited impaired PM, particularly in tasks requiring self-initiation, impacting their daily functioning. Additionally, ASD adults demonstrated poorer performance in emotional regulation, specifically in the cognitive appraisal facet. These results emphasize the need for interventions addressing memory challenges and emotional regulation in adults with ASD, aiming to enhance their overall well-being and daily life functioning.