A phallologist is a person who studies or has an interest in the penis. Some synonyms that can be used to describe a phallologist include penologist, penile scholar, phallophile, and penis researcher. The term "andrologist" is often used to refer to doctors who specialize in the male reproductive system, including the penis. Another term is "urologist," which refers to doctors who specialize in the urinary and reproductive systems of both men and women. While these terms may not specifically denote a focus on the penis, they are related fields that may be of interest to those who are phallology enthusiasts.