Shackle Island is a census-designated place and unincorporated community in Sumner County, Tennessee, United States.

According to an article published in The Nashville scene titled, Shackle Island: An Investigative Report.

The distillery was run by a man named Daniel Montgomery "Daniel Montgomery was born in 1789 in Sumner County and he "engaged in extensive farming operations and operated a grist mill, a sawmill, and a whiskey distillery at Shackle Island in Sumner County."

(Betsy Phillips, Jan 18, 2016)[6] As of the 2020 United States census, there were 3,331 people, 1,042 households, and 916 families residing in the CDP.

Shackle Island is located in the southwestern portion of Sumner County at the crossroad intersection of Tennessee State Routes 174 and 258, about 4 miles (6.4 km) north of Hendersonville.