Knocking
# Knocking

Knocking or Knockin or Knockin' may refer to:

* Knocking, Austria, a hamlet, subdivision of Erlauf (municipality) in Austria
* Knocking (2006 film), a documentary about Jehovah's Witnesses
* Knocking (2021 film), a Swedish thriller film
* "Knockin'" (song), by Spanish band Double Vision (1995)
* Engine knocking, or the sound accompanying automotive combustion malfunction
* Port knocking, a covert method of opening a port on a server
* Roof knocking, a bombing practice of the Israeli Defense Forces
* Gene knockin, genetic engineering method
* Knockin Castle, castle situated in the village of Knockin on Shropshire between Oswestry and Shrewsbury
