Knockdene Park South had previously been called Knockdene Park which features in the The Belfast And Province Of Ulster Directory 1895. It takes part of its name from being in the Knock area and close to Knock Road.
"The Surveyor reported on the application of residents in Knockdene Park that the main thoroughfare should be named Knockdene Park and the branch roads Knockdene Park South and Knockdene Park North.
Resolved – That the application be granted and the Surveyor instructed to have the street signs altered accordingly. (29th December 1925).