Glenaire is a city in Clay County, Missouri, United States.

Glenaire was originally the location of a resort in between the cities of Liberty and Claycomo.

Subsequently, in 1950 after petitioning the Clay County courts, the residents of the area celebrated the incorporation of The Village of Glenaire.

According to the United States Census Bureau, the city has a total area of 0.27 square miles (0.70 km2), all land.

There were 231 housing units at an average density of 855.6 per square mile (330.3/km2).

21.8% of all households were made up of individuals, and 8.2% had someone living alone who was 65 years of age or older.

16.9% of all households were made up of individuals, and 5.5% had someone living alone who was 65 years of age or older.