Komárom county (in Latin:
comitatus Comaromiensis, in Hungarian:
Komárom (vár)megye, in Slovak:
Komárnanský komitát / Komárnanská stolica / Komárnanská župa, in German:
Komorner Gespanschaft / Komitat Komorn) was an administrative county (
comitatus) of the
Kingdom of Hungary in present-day southern
Slovakia (1/2) and north-western
Hungary (1/2) on both sides of the
Danube river.