Lower urinary tract (LUT) symptoms are not uncommon in postmenopausal Myanmar women. The aim of the study was to study the urodynamic assessment in postmenopausal women. A cross-sectional, analytical study was conducted to eligible 114 postmenopausal women (81 symptomatic women and 33 asymptomatic women) attending at Gynaecological Out-patient Department of Central Women's Hospital (Yangon) from October 2012 to June 2014. Examination included body mass index (BMI), vaginal examination, cough test, and 1 hour pad test. Urine RE was done to all patients to exclude urinary tract infection. Urodynamic investigation was done in those patients who had no urinary tract infection and it was carried out at Urosurgical Ward of No. 2 Military Hospital, Yangon. The most frequent symptom among the study population was urinary incontinence (50%) followed by urgency (45.6%), night time frequency (38.6%). Symptom-based clinical diagnosis of study population were: stress urinary incontinence (SUI) in 9.6%, urgency urinary incontinence (UUI) in 4.9%, mixed urinary incontinence (MUI) in 25.4%, overactive bladder (OAB) in 16.7%, and voiding problem in 28.9% of study population. Regarding the urodynamic diagnosis, 47 patients had normal urodynamic findings and 20 patients were found to have urodynamic stress incontinence (USI). Five patients had urodynamic evidence of detrusor overactivity (DO). Mixed type of USI and DO was found in 10 patients. Forty patients had objective evidence of voiding dysfunction. There is no statistically significant association between duration of menopause and urodynamic parameters of postmenopausal women except strong desire to void. (p=0.044). Urodynamic investigations help postmenopausal women with LUTS in getting correct diagnosis and formulating a treatment plan especially surgical treatment is considered.