Keyport Harbor

{{Infobox body of water

| name = Keyport Harbor

| other_name = Brown's Point Cove

| image = Keyport1.jpg

| alt =

| caption = A portion of the Keyport Waterfront in Monmouth County, New Jersey

| pushpin_map = USA New Jersey Monmouth County

| pushpin_map_alt =

| pushpin_label_position = bottom

| pushpin_map_caption = Location of Keyport Harbor, in Northern Monmouth County, New Jersey

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| location = Keyport, New Jersey

| coords = {{coord|40|26|40.386|N|74|11|57.518|W|region:US-NJ_type:waterbody|display =inline,title}}

| type = Harbor

| part_of = Raritan Bay

| inflow = Luppatatong Creek
Matawan Creek
Chingarora Creek

| oceans = Atlantic Ocean

| basin_countries = United States

| agency = NY/NJ Baykeeper

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| max-depth = {{convert|8|ft}}{{cite web|title=REPORT OF CHANNEL CONDITIONS – Keyport Bay|url=https://www.nan.usace.army.mil/Portals/37/docs/civilworks/ConDep/CDR_2015/Oct15/Keyport%20Harbor,%20NJ%20CDR.pdf|website=US Army Corps of Engineers|access-date=18 December 2015|date=20 October 2015}}

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Keyport Harbor is an arm of Raritan Bay, located on the south side of the bay. Streams flowing into Keyport Harbor include Matawan Creek, Luppatatong Creek and Chingarora Creek.

An earlier name for Keyport Harbor is Brown's Point Cove.