Mid-phalangealHair, Proximal phalangeal and Seminal fluid analysis. Background:Hair is a filamentous keratinized structure present over almost all of the body surface. It is a derivative of the epidermis which assists in thermoregulation and provides some protection against injury. Probability of incidence of hair distribution was also studied among the dorsum of phalanges of the 2 nd to 5 th fingers of both hands. Objectives: The aim of the study to assess the different patterns and frequency of the distribution of the phalangeal hair of the hands of Iraqi males' population in correlation with seminal fluid parameters. Methods: The subjects studied were (350) male. All subjects were born in Iraq and aged between 18 and 58 years. The observations were made using a hand lens in daylight. Presence or absence of hair over each phalanx of the right and left hand, age and seminal fluid analysis of each subject were recorded. Results:The results was shown a significant difference between study group and control group in hair distribution on the dorsum of phalanges of the fingers of right and left hands. In left hand phalanges of proximal and middle (P<0.05) but on index there was non-significant (P>0.082). While significant difference (P<0.05) in proximal of right hand phalanges. Non-significant (P>0.05) in index and middle fingers of right hands Discussion: Many studies show that the majority of individuals have hair on the proximal and middle phalanges of the right and left hand but no on the distal phalanges. The highest percentage of hair distribution was observed in the proximal phalanges. The significant variation in the pattern and number of hair on the phalanges may be due to hormonal effect during intrauterine life.