拉莫伊尔县（Lamoille County, Vermont）是美国佛蒙特州 中北部的一个县。面积1,201平方公里。根据美国2000年人口普查，共有人口23,233。县治海德帕克。

成立于1835年，是佛州最晚成立的县。县名来源有二：一说为尚普兰湖原名之误拼，另一为法语「骨髓」一词。

Lamoille County /ləˈmɔɪl/ is a county located in the state of Vermont, in the United States. As of the 2010 census, the population was 24,475, making it the third-least populous county in Vermont. Its shire town (county seat) is the municipality of Hyde Park. The county was created in 1835 and organized the following year.