Lake Holiday Hideaway is an unincorporated community and census-designated place (CDP) in Fountain County, Indiana, United States.
The community is in southern Fountain County, built around a reservoir named "Lake Holiday Hide-away" built on Mill Creek. The town of Kingman is to the southeast, while Veedersburg is to the north.
According to the United States Census Bureau, the CDP has a total area of , of which are land and , or 15.37%, are water. Via Mill Creek, the lake drains southwest to the Wabash River.
The United States Census Bureau delineated Lake Holiday Hideaway as a census designated place in the 2022 American Community Survey.