Objective: To assess severity of oral ulcers & its correlation with iron deficiency. Methodology: The data for this survey was collected from 19 female patients reported to a private clinic during 2013 to 2018. Demographic data and data assessing oral health will be collected from each subject in single appointment. Locations of oral ulcers were noted down in data sheet along with other soft tissue findings. Size, borders & associated pain were noted down in examination sheet. Ulcers were classified according to severity according to their size, borders & associated pain. Female patients of the subjects were subjected to complete hemogram All data was tabulated to draw conclusion. Results: The data was analyzed from 19 female subjects. The findings suggested that most common location for oral ulcer noted was buccal mucosa. Right buccal mucosa was affected more as compared to left buccal mucosa. Other predominant locations were lateral border of tongue & lip in decreasing order of severity. Size of the ulcers were ranging from 4mm to 12 mm with mean size as 7mm. Mucosa adjacent to ulcer was erythematous in 9 cases, normal colored in 7 and of grey colored in 1 case. Mean Hb value of the subjects was 8.8 gm/dl with range from 6gm/dl to 12gm/dl. Size of the ulcer was found to be clinically significant to that of low Hb scores. Conclusion: Oral ulcers have more size & increased severity in patients with iron deficiency.