The provision of high quality healthcare is greatly influenced by the healthcare professionals' job satisfaction. The quality of healthcare delivery at the local, regional, and global levels is influenced by a variety of factors. The purpose of this study was to ascertain the connections between job satisfaction and the quality of healthcare provided by the Ogun State Hospital Management Board in Nigeria. The healthcare workers were the subjects of a cross-sectional design study. A well-structured questionnaire with a total of 729 copies was employed as the research tool, and a multi-stage sampling procedure was used to gather data from sampled respondents. Descriptive and inferential statistical techniques were used to analyze the data collected. The findings demonstrated strong relationships between management, supervision, the nature of the work, the workplace, and rewards and compensations and overall job satisfaction. The findings also revealed a moderately positive association (r =0.45) between job satisfaction and the quality of healthcare provided. The findings also revealed a statistically significant relationship (p 0.05) between job satisfaction levels and the quality of healthcare services provided. Additionally, there is no statistically significant association between respondents' marital status and their level of job satisfaction (p>0.05). This study is significant since it shed additional light on the connections between job satisfaction and the grade of healthcare professionals' performance at Ogun State Hospitals Management Board in Nigeria.