阿士塔布拉县（Ashtabula County, Ohio）是位于美国俄亥俄州东北部的一个县，北傍伊利湖与加拿大相望，东邻宾夕法尼亚州。面积3,544平方公里。根据美国2000年人口普查，共有人口102,728。县治杰弗逊。

成立于1807年，县名来自印第安语，意思是「多鱼的河」。

Ashtabula County is the northeasternmost county in the U.S. state of Ohio. As of the 2010 census, the population was 101,497. The county seat is Jefferson. The county was created in 1808 and later organized in 1811. It is named for a Iroquoian word meaning "river of many fish".