Analogue Bubblebath 4 was the fourth EP released by Richard D. James, under the alias AFX. It is also the fourth release in the Analogue Bubblebath series.
The EP consists of four tracks (plus one hidden track on CD releases). It was released in 1994 on Rephlex Records in both CD and 12" vinyl formats.
All tracks are untitled. However, many AFX fans have titled the songs after animals whose noises are thought to be heard on each track - Elephant Song, Cuckoo, Gibbon, and Sloth, in order. These names have been adopted by the Gracenote music database. The fifth track of the CD reissue is actually a heavily modulated snippet from a press conference with Evel Knievel, sometime after the Snake River Canyon incident. It is often nicknamed "Knievel."