What was the first name of Colonel Sherman T. Potter?

Colonel Sherman T. Potter’s first name was Sherman. He is a fictional career Army officer who became the commanding officer of the 4077th Mobile Army Surgical Hospital in the television series M*A*S*H.

Potter replaced Lieutenant Colonel Henry Blake as commander during the fourth season and remained in charge for the rest of the series. Unlike the younger, more impulsive doctors around him, Potter represented military experience, discipline, and an often understated compassion for patients and staff.

Harry Morgan played Potter throughout his television run. Morgan also reprised the character in AfterMASH, the 1983–85 sequel series that followed Potter’s return to civilian life and work at a veterans hospital. The character’s full televised name is usually given as Colonel Sherman T. Potter.

Viewers sometimes confuse Sherman with the names of other M*A*S*H officers, especially Henry Blake or Frank Burns, because the series had several commanding and senior characters. However, Sherman is not a nickname or a rank: it is Potter’s canonical first name, making it the single fair answer to the question.