| A Complete Demonstration | |
| Type: | studio |
| Artist: | VAST |
| Cover: | 2005 - A Complete Demonstration Large 2.jpg |
| Released: | 2005 |
| Genre: | Alternative rock |
| Length: | 58:51 |
| Label: | 2blossoms |
| Prev Title: | Nude |
| Prev Year: | 2004 |
| Next Title: | Turquoise & Crimson (Retail Version) |
| Next Year: | 2006 |
A Complete Demonstration is a compilation of early demo tracks by the band VAST. It was made available online in 2005 as a limited edition piece, with the first five hundred copies being signed by Jon Crosby, as well as being numbered.