Bardonia is a hamlet and census-designated place in the town of Clarkstown, Rockland County, New York, United States.

Bardonia is named for the Bardon brothers - John and the twins Phillip and Conrad - who came from Bavaria in 1849 and opened several businesses.

[citation needed] Bardonia is located within the Clarkstown Central School District's boundaries.

The private Catholic Albertus Magnus High School is also located in Bardonia.

Service along the New City Branch ended in 1939, and the tracks were quickly removed thereafter.

Today, Bardonia does not have rail service; its nearest railway station is 2.5 miles to the south at Nanuet.