| Lost Ritual | |
| Type: | Album |
| Artist: | Raging Speedhorn |
| Cover: | Lost_Ritual_album_cover.jpg |
| Released: | July 15, 2016 |
| Genre: | Sludge metal |
| Producer: | Raging Speedhorn |
| Prev Title: | Before the Sea Was Built |
| Prev Year: | 2007 |
| Next Title: | 20 Year Anniversary |
| Next Year: | 2018 |
Lost Ritual is the fifth album by UK sludgecore band Raging Speedhorn. It is their first full-length record since their re-union in 2014 and the first to feature original vocalist Frank Regan since 2005's How the Great Have Fallen.