The name Minnis is of German origin, derived from the given name Minnie, which is a diminutive form of Wilhelmina. It is also related to the surname Minns, which has English origins and is thought to have been an occupational name for a miller or grinder. The name Minnis was more commonly used in the past but has become less popular in recent years.
The name Minnis experienced two peaks in popularity, with a notable gap of 18 years between them.