Navigator was the original name used for Navision in its home country Denmark.
The name was in use from the MS-DOS based version 1 in 1987 until the first Windows version Navigator Financials 1.0 in 1995. After Financials 1.0 Navision Software Denmark started selling it as Navision Financials.
In the period from 1987 to 1992 where IBM were the sole distributor in Denmark, most people here simply referred to it as IBM-Navigator. When Navigator version 3.0 was released in 1989 they had even changed the box to be IBM-blue and was officially selling it as IBM-Navigator.
Other names used for Navision were: Avista (US) and Fjödiner (Iceland).