Eastwood (June 6, 1894 – March 20, 1896) was a borough that existed for a brief period of time in Bergen County, New Jersey at the height of the "boroughitis" fever that engendered the creation of 26 new municipalities in the county during 1894. When River Vale was incorporated in 1906, it included the area that had been the Borough of Eastwood.
Eastwood was formed from the old Washington Township in the area on the west of present-day River Vale and east of Westwood. As stated in History of Bergen County, New Jersey, "Eastwood caught the borough fever in March, 1894, and was organized as a borough, but in a short time it became tired of borough life and returned to Washington township from which it was set off." Eastwood's demise made it the only borough in Bergen County to be dissolved after its creation.