Pines Lake is an unincorporated community and census-designated place located on a lake in Wayne, in Passaic County, in the U.S. state of New Jersey. Pines Lake was started in the 1920s as a vacation community around a man-made lake approximately 1.5 miles long and 0.5 miles wide. Many of the original homes were modified log cabins. A large number of these log cabins, built of American chestnut in the 1930s, are still occupied as year-round homes.