Walden is the largest of three villages of the Town of Montgomery in Orange County, New York, United States. The population was 6,978 at the 2010 census.
The village began in the early 18th century as a mill town along the Wallkill River. One miller, Jacob Walden, was so successful the village that incorporated in the mid-19th century took its name from him. Later on, it would be the three separate knife manufacturers based in the village that brought it growth and prosperity. They are gone today, but other industrial concerns remain. Walden has been best known in the Hudson Valley as the home of the Thruway Marketshypermarket complex, which closed in 2013.