Nitria could refer to:
*
Nitra
Nitra (; also known by other #Etymology, alternative names) is a city in western Slovakia, situated at the foot of Zobor Mountain in the valley of the river Nitra (river), Nitra. It is located 95 km east of Bratislava. With a population of ...
, a city in western Slovakia
*
Nitria (monastic site), abandoned site of early Christian monastic activity
*
Nitrian Desert, region in northwestern Egypt
{{disambig