English by region: biscuit (East Midlands, London and South East England, North East England, North West England, Scotland, South West England, West Midlands, Yorkshire).
German by region: Kekserl (Austria); Gutsle (Baden-Württemberg); Platzerl (Bavaria); Guetzli (Switzerland).
In other languages: печиво (Ukrainian), Keks (German), biscuit (French), galleta (Spanish), ciastko (Polish).