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human
[Star Wars] Are there other grand moffs?

So IIRC, Grand Moff Tarkin was specifically in charge of the Outer Rim. In A New Hope, he mentioned that after dissolution of the senate, the regional governors will enact direct control over their territories. So, are there other grand moffs in charge of say the Mid Rim or Core Worlds etc?
gpt
Yes. A Grand Moff is the chief military and civil leader of an Oversector, which is really just a large or politically important sector. At the time of the Battle of Yavin, there were two: Wilhuff Tarkin, Governor of the Outer Rim, and Lozen Tolruck, Governor of the Kashyyyk Sector. Grand Moff Randd would be the last "official" Imperial Grand Moff (i.e. not self-proclaimed after the death of the emperor).

Point of clarification: A Grand Moff and a Moff were military governors, and were often referred to as just "Governor." This was not considered a term of disrespect, but rather archaic as the term Moff had only been reintroduced relatively recently (soon after the proclamation of the New Order). 

A Grand Moff, on paper, had no authority over any other Moff as technically they were in different hierarchies (a sector would not have a Moff and a Grand Moff, for example), but they were usually very highly respected individuals throughout the Empire.