'antechinomys' originates from Modern (scientific) Latin/New Latin, likely coined from Greek-derived elements, specifically the combining form 'antechin-' (related to the similar genus name 'Antechinus') and Greek 'mys' meaning 'mouse'.

'antechinomys' was coined in modern scientific Latin when taxonomists named the genus (following conventions that combine Greek roots). It relates to other dasyurid genus names such as 'Antechinus' and retained the modern-form genus name 'Antechinomys'.

The name was created as a scientific (taxonomic) label for this group of small marsupials and has remained a technical genus name with the same referential meaning.