After the Treaty of Trianon, the long history of research on the Hungarian dialects in the neighbouring countries did not cease. A previous article on the history of research on Hungarian dialect islands reviewed the significant achievements of Hungarian dialect research up to 1920 (Both 2020b). In the present article, we summarize the essential periods and results of Hungarian dialect research in Romania from 1920 to the present day. The article will show how in the last one hundred years a Hungarian-language department in a minority environment has redirected its research, resulting in a decreasing share of dialectological research, and how, despite these developments, the Hungarian dialectological community in Romania has enriched the Hungarian dialectology research with significant results.