Statement of Problem: Anthropometry is applied in medical professions such as maxillofacial surgery,growth and development studies, plastic surgery, bioengineering and non- medical branches such as like shoe- making and eye- glasses industries.

Aim: The aim of the present study was to determine facial and cranial ratios among Isfahan young adults.
Materials and Methods: A study was done randomly on 200 boys and 200 girls, from among Isfahan young adults, with normal face patterns. Facial and cranial ratios, according to sex, were estimated and compared.
Results: The results of this study were compared with Canadian anthropometric findings by Farkas.There was no significant difference in cranial width between boys and girls but cranial length and all facial parameters (Int ,cant, go-go, zy- zy, ch-ch, Ala-Ala, low.lip, Up.Iip, Sn.gn, Sto.gn, N.sto, Ngn)were greater in boys than girls. Cranial index and , , " ,Cl ratios were greater in n - gn zy - zy zy - zy zy - zy ... slo-go sn-gn sto-gn slo-gn sto-gn . . ._girls, however, -, -, , , were greater in boys, There was no significant go-go n- gn n- gn n- sto sn - gn difference about facial index between boys and girls. Comparing facial parameters between Iranian and Canadian races, low. lip, Ala-Ala and go- go were greater among Iranians, however, Int cant ,Up. lip. N.gn, ch- ch, zy-zy showed a greater size among Canadians. Sn-gn ratio was greater in Canadian girls, but there was no significant difference between Iranian and Canadian boys in this regard. " " s" , s° " 8° , " ~ s ° , g° " 8° , ^-- ratios were greater among Isfahanian boys and girls,zy-zy zy-zy zy-zy n - gn zy-zy however, J ° ~ g" , 5 ° " 8" / ° " s" ratios were greater among Canadians. Regarding 5"~g" ratio, no n- sto sn- gn n~ gn n- gn significant difference was observed between Canadian and Isfahanian girls.
Conclusion: Considering the significant difference in the facial and cranial anthropologic ratios and sizes, among Canadian and Isfahanian young adults, the results obtained from Canadian race, should not be applied as a criteria for Iranian surgical and dental treatment plans. Due to the wide racial combinations in Iran, more studies, with wider variations, should be conducted among different Iranian races.