Women who are yet to marry are not happy and are faced by several degrees of psychological trauma such as isolation, low self-esteem, depression, anxiety, shame, loneliness and family pressure. Psychological factors affecting reproductive-aged women who are yet to marry are shaped by a mix of individual emotions, societal expectations, cultural norms, and life experiences. One of the most dominant psychological factors is marriage pressure. This study aimed to Assess Psychological Factors Affecting Reproductive-Aged Women Who Are Yet to Marry In South-South Nigeria. This was a cross-sectional study involving 250 women. Participants’ age is between 18 to 40 years and above. A well-structured questionnaire was administered to participants. The study lasted for a period of 3 months. Statistical analysis was done using SPSS version 25.0 and p < 0.05 was significant. The study revealed that 60% of the participants were between 35 and 39 years old, 68% had tertiary education, 60% residence in the city, 60% not in a relationship, 80% are under family pressure to get married, 80% are not comfortable, 76% feel pressured to marry after her friend’s marriage, 80% are anxious of not being married, 76% said remaining unmarried affects my self-esteem, 76% feel emotionally unstable, 80% feel lonely, 76% are not happy been single, 80% agreed that fear of divorce or marital problem affects my decision to marry, 76% had depression, 68% faced isolation, 80% are ashamed of themselves. The study shows that majority of the participants are facing different degrees of psychological trauma.