| All Flesh Is Grass | |
| Type: | Album |
| Artist: | Madder Mortem |
| Cover: | All Flesh Is Grass (album).jpeg |
| Released: | 5 March 2001 |
| Recorded: | October 2000 |
| Genre: | Progressive metal, alternative metal |
| Length: | 47:43 |
| Label: | Century Media |
| Producer: | Madder Mortem and Pelle Saether |
| Prev Title: | Mercury |
| Prev Year: | 1999 |
| Next Title: | Deadlands |
| Next Year: | 2002 |
All Flesh Is Grass is the second studio album by Norwegian metal band Madder Mortem, released on 5 March 2001 through Century Media Records. It was recorded in Studio Underground, Västerås, Sweden, in October 2000.
The title refers to the phrase "All flesh is grass", an extract from the Old Testament Book of Isaiah 40:6, meaning that human life is transitory.