| versions=Echoplex<br>Echoplex (Live At Rehearsals)
| live=[[Lights In The Sky Tour]]
}}[[Image:Echoplex.jpg|thumb|Artwork accompanying the MP3 file]]'''"Echoplex"''' is a song by [[Nine Inch Nails]] first released online via Facebook on May 2, 2008. It is the fifth track on the album ''[[The Slip]]'', but and is also included on the promotional [[Lights In The Sky Tour|2008 tour]] EP, ''[[Lights In The Sky (Seed)|Lights In The Sky]]''.
The artwork may symbolize someone being surrounded by sound, as if it were echoing around them. It may also symbolize walls around the person, which makes sense due to the lyrics making a reference to sound bouncing off of walls.