科特兰县（Cortland County, New York）是美国纽约州中部偏西的一个县。面积2,895平方公里。根据美国2000年人口普查，共有人口79,894。县治科特兰。

成立于1808年4月8日。县名是纪念纽约州第一任副州长、制宪会议主席凡·科特兰 (Pierre Van Cortlandt)。

Cortland County is a county located in the U.S. state of New York. As of the 2010 census, the population of Cortland County was 49,336. The county seat is Cortland. The county is named after Pierre Van Cortlandt, president of the convention at Kingston that wrote the first New York State Constitution in 1777, and first lieutenant governor of the state.