HLA‐A,B,C phenotyping was performed on 95 patients with geographic tongue to determine whether there is an increased frequency of any particular allele in this condition. An increased frequency of B15 was found in the patients when compared to normal controls. When the patients were divided into atopic and non‐atopic groups there was an increased frequency of B15 and a decreased frequency of B40 in the atopic group compared to the controls. B40 was also decreased in the atopic group when compared to the non‐atopic group. When the type I correction factor was applied to the probability values the differences in antigen frequencies in all cases became insignif