亨特敦县（Hunterdon County, New Jersey）是美国新泽西州西部的一个县。西临为纽泽西州与宾夕法尼亚州州界的德拉瓦河，面积1,134平方公里，县治夫雷明顿 (Flemington)。于1714年3月13日自伯灵顿郡分出。崎郡府位于富莱明顿（Flemington）。根据2000年调查，人口为121,989人，亦为美国排名第十三富有的郡。杭特顿郡属于大纽约都会区的边缘，都市化程度并不明显，主要为往纽约市与费城上班通勤者的居家地区。

亨特敦县名来自1710至1719年任州长的罗伯特·亨特 (Robert Hunter)。

Hunterdon County is a county located in the western section of the U.S. state of New Jersey. The county had a Census-estimated population of 125,488 in 2015, representing a 2.2% decrease from the 128,349 enumerated in the 2010 United States Census, in turn increasing by 6,360 (+5.2%) from the 121,989 counted in the 2000 Census, retaining its position as the state's 14th-most populous county. The percentage increase in population between 2000 and 2010 was the largest in New Jersey, almost triple the statewide increase of 4.5%, and the absolute increase in residents was the third highest. It is part of the New York Metropolitan Area. Its county seat is Flemington. The Bureau of Economic Analysis ranked the county as having the 19th-highest per capita income of all 3,113 counties in the United States (and the third highest in New Jersey) as of 2009.