Objectives:To compare the prevalence of symptomatic urinary tract infection (S-UTI) in women with gestational diabetes mellitus (GDM), pregestational diabetes mellitus (PGDM), and the effect of glycemic control methods.Materials and Methods:This is a retrospective review of women with GDM and PGDM, who had S-UTI treated at Sultan Qaboos University Hospital between January 1, 2009, and December 31, 2010.Results:From a total of 639 women with diabetes mellitus (DM), 91% (n = 581) had GDM and 9% (n = 58) had PGDM. The prevalence of S-UTI was 6.7% (n = 43). The prevalence of S-UTI was 6.5% (n = 38) in women with GDM and 8.6% (n = 5) in women with PGDM. In women with GDM, S-UTI occurred in 4.6% (n = 5) of insulin users compared to 6.9% (n = 33) in noninsulin users. Differences were not statistically significant.Conclusion:The prevalence of S-UTI is similar in women with GDM and PGDM regardless of the method used for glycemic control.