Lake Holiday Hideaway is an unincorporated community and census-designated place (CDP) in Fountain County, Indiana, United States.

[2] The community is in southern Fountain County, built around a reservoir named "Lake Holiday Hide-away"[3] built on Mill Creek.

According to the United States Census Bureau, the CDP has a total area of 0.63 square miles (1.63 km2), of which 0.53 square miles (1.37 km2) are land and 0.10 square miles (0.26 km2), or 15.37%, are water.

[1] 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.