thumb|300px|[[Idylease Inn, a Historic Landmark, is located in Newfoundland.]]
Newfoundland () is an unincorporated community and census-designated place (CDP) covering portions of both West Milford in Passaic County, and Jefferson Township in Morris County, in the U.S. state of New Jersey. It is located along Route 23 and is the mailing address of Green Pond, a private lake in Rockaway Township. As of the 2020 United States census, the CDP's population was 1,145.
Newfoundland is also the home of a nationwide food waste program called AmpleHarvest.org, which was launched in 2009 to end hunger and food waste by helping millions of gardeners nationwide donate excess food to thousands of local food pantries. The program came out of a local program that started donating food from its community garden to food pantries in Newfoundland and other nearby areas.