By definition, chlamydia is a urinary tract infection, just a very specific type. Chlamydia is caused by an organism that enters the urinary tract via sexual intercourse. However, even though this specific infection affects the vagina, uterus, fallopian tubes, urethra and cervix, it does not cause what is commonly referred to as a UTI.
Undiagnosed, chlamydia can lead to serious infection and even infertility in women. The most common symptoms of chlamydia are silent and go unnoticed and undiagnosed in women, so if you feel that you might have either chlamydia or a UTI seek treatment. In addition, the symptoms associated with chlamydia can mimic those of a UTI once the STD has reached a certain level of infection and begins to cause irritation in the individual.
Both types of infections can be diagnosed with a simple urine test.