Abstract: A sanitary straight razor is provided having a universal handle unit and a disposable head unit. The entirety of the head unit is disposable so that for each shave, a new and sanitary blade is provided. The head unit can be attached and detached without the need for the head unit itself to be handled by a user. Health and sanitation risks are advantageously alleviated, offering benefits to service providers, such as professional barbers and cosmetologists, who deal with hundreds of individuals, where sanitation and safety is of paramount importance. Additionally, the sanitary straight razor can be provided along with a razor blade assembly rack as part of a sanitary straight razor system, which razor blade assembly rack holds multiple disposable razor blade assemblies and facilitates easy, sanitary replacement of the disposable razor blade assembly.