The Raritan Bayshore is a region in central sections in the state of New Jersey. It is the area around Raritan Bay from The Amboys to Sandy Hook, in Middlesex and Monmouth counties, including the towns of Perth Amboy, South Amboy, Sayreville, Old Bridge, Matawan, Aberdeen, Keyport, Union Beach, Hazlet, Keansburg, Middletown, Atlantic Highlands, and Highlands. It is the northernmost part of the Jersey Shore, located just south of New York City. At Keansburg is a traditional amusement park while at Sandy Hook are found ocean beaches. The Sadowski Parkway beach area in Perth Amboy, which lies at the mouth of the Raritan River, was deemed the "Riviera of New Jersey" by local government. In recent years many of the beaches on the Bayshore area have been rediscovered and upgraded.

In September 1609, the Halve Maen (Dutch for Half Moon), anchored along the shores of the Raritan Bay, and remained for five days to explore the estuary and establish contact with local Lenape people (who later become known as the Navesink and Raritan). Four his crew were sent up the Arthur Kill and to Newark Bay. Upon their return they were attacked and one of them, John Colman was fatally shot by arrow. Taken ashore to be buried, the spot was christened Coleman's Point. The location Keansburg still bears the name.

Popular attractions in the Bayshore area include Keansburg Amusement Park and Runaway Rapids Waterpark in Keansburg, Mount Mitchill in Atlantic Highlands, and Longstreet Farm in Holmdel. There are also beaches and waterfronts in both of The Amboys, the Laurence Harbor section of Old Bridge, the Cliffwood Beach section of Aberdeen, Keyport, Union Beach, Keansburg, and the East Keansburg, Port Monmouth, Belford, and Leonardo sections of Middletown. There are also non-commercial boardwalks in Perth Amboy and Keansburg.

Because many of the towns date back to the 17th and 18th century, as well as the important naval history in the area, there are numerous historical locations throughout the Bayshore area. Historical attractions include Fort Hancock in Sandy Hook, the Twin Lights State Historic Site in Highlands, the Strauss Mansion in Atlantic Highlands, Portland Place and the Taylor-Butler House in Middletown, Longstreet Farm in Holmdel, the Burrowes Mansion in Matawan, the Thomas Warne Museum in Old Bridge, and the Kearny Cottage Museum, the Perth Amboy Ferry Slip, and Proprietary House in Perth Amboy. Additionally, there are various historical markers and sites from these early time periods, especially several from the Revolutionary War and the British retreat to Sandy Hook from the Battle of Monmouth.

The Bayshore Regional Strategic Plan was an effort by nine municipalities in northern Monmouth County, New Jersey to reinvigorate the area's economy, especially along the Route 36 corridor along the Sandy Hook Bay.

Municipalities participating in the effort were Aberdeen, Atlantic Highlands, Hazlet, Highlands, Keansburg, Keyport, Matawan, Middletown and Union Beach.

In August 2006 a report was released, and Monmouth County was asked to vote to have the county planning board approve the plan the Bayshore organization has created.

This plan has since been replaced by the 2016 Monmouth County Master Plan, an effort to beautify, maintain, and revitalize Monmouth County. The new master plan combined four separate regional plans within the county to create one large master plan, fully taking into consideration what each plan had to offer.