Allamuchy may refer to the following in the U.S. state of New Jersey:
Allamuchy Mountain State Park, in Byram Township Allamuchy Township, New Jersey, in Warren County Allamuchy (CDP), New Jersey, a census-designated place in the township Allamuchy Freight House, in the above township, built by the Lehigh and Hudson River Railway Allamuchy-Panther Valley, New Jersey, a census-designated place and unincorporated area in the above township Allamuchy Township School District, serves the above township