Waddy is an unincorporated community within Shelby County, Kentucky, United States. This place lies along the intersection of Kentucky Routes 395 and 2867, approximately a mile south of Interstate 64 off exit 43. Although it is an unincorporated town, it has a post office with the ZIP code 40076.
Waddy was shown as Station 318W in the Southern Railway Employee Time Table Number 67 dated November 15, 1942. The railroad had a 65 car siding at Waddy and 10 car additional capacity on other tracks at Waddy. The current railroad siding at Waddy on the Norfolk Southern Railroad is over two miles long.