In females urinary tract infection is one of the commonest causes of frequent urination
. Get your urine
examination and culture done to rule it out.
It can also be due to many reasons which can be physiological or disease-related, and include excessive intake of liquids, diuretic substances (including tea, caffeine, alcohol, certain drugs), anxiety, exposure to cold, diabetes mellitus, diabetes insipidus (central or nephrogenic), or obstruction, etc to name a few more common ones.