Alabi AS,Olagbaye BA,Aniyikaye BA ,Lewu FS,Adigun FM,Adeleke OS,Kareem BS,Aigbogun E2026-04-212026-04-212021-092315-9650https://uilspace.unilorin.edu.ng/handle/123456789/17528Some factors have been found to influence lip print patterns in individuals. The aim of this study is to evaluate the relationship between lip print pattern and season of birth in a Nigerian population. A total 764 adults were purposively selected from a two closely related tribe in the north central geopolitical zone of Nigeria. There lip prints were obtained by applying lip gloss and print on a glass slide. Each lip was divided into 6 quadrants and studied under magnifying lens. Lip print patterns were grouped using Hassan Fahmy (1977) classification. Statistical analysis was done using Statistical Package for Social Sciences (SPSS version 23). Lip print types were expressed as frequency and proportion for each lip quadrant. Correlations between male and female lip print pattern and their season of birth was done using Chi-square test. The confidence level was set as 95% while statistical significance was set at . Results showed a consistent prevalence of type III and IV in the entire upper and lower quadrant, while the least expressed were type I' and II. Qualitative analysis of association between season of birth and lip print pattern showed no significant distributional difference between those born during wet and dry season in the entire upper and lower quadrant but established that types III and IV were more prevalence in the tribe of study. These finding has provided further fact to prove that cheiloscopy is a reliable tool for personal or tribe identification.enLipprintscheiloscopyseasonbirthArticle