Hypertension is a common disease that imposes risks of diseases on multi-system. Failure to control hypertension leads to end up with unavoidable medical complications. Knowledge of patients about their disease is a key factor for better compliance. The purpose of this study was to determine the variables that are associated with the knowledge of hypertensive patients in Bangladesh. This observational, analytical, cross-sectional study was conducted on patients who visited Jahurul Islam Medical College in Kishoreganj, Bangladesh, and were given an anonymous survey to complete between February 2024 and April 2024. Non-probabilistic sampling techniques were used to distribute questionnaire forms to participants who voluntarily consented to participate in the study. Respondents with certain mental health disorders and those who chose not to participate in the study were excluded; 188 individuals had finished the survey and satisfied the inclusion criteria. The findings showed that 47.87% of the participants had completed secondary school, the mean age of the participants was 43.0±13.29 years, and more than half of them (52.1%) were female. Physicians and television were the primary sources of their hypertension knowledge, accounting for 34.57% and 19.14% of the total, respectively. The majority of respondents obtained their information from health experts, and the odds of knowledge were higher for females, those living in urban areas, those with higher levels of education, and those who matured. The knowledge of respondents on hypertension was shown to be significantly correlated with their gender, age, location, level of education, and information source. There are several factors that influence people's knowledge of hypertension, and understanding these aspects enables public policies and educational initiatives to be tailored to the population that needs them most desperately.