  The Twelfth International Workshop on Non-Classical Models of Automata and
Applications (NCMA 2022) was held in Debrecen, Hungary, on August 26 and 27,
2022, organized by the University of Debrecen. The NCMA workshop series was
established in 2009 as an annual event for researchers working on non-classical
and classical models of automata, grammars or related devices. Such models are
investigated both as theoretical models and as formal models for applications
from different points of view.
