| Critical Mass | |
| Type: | studio |
| Artist: | Threshold |
| Cover: | Threshold_Critical_Mass.jpg |
| Released: | 2 September 2002 |
| Recorded: | March 2002 – June 2002 |
| Genre: | Progressive metal |
| Length: | 59:55 |
| Label: | InsideOut Music |
| Prev Title: | Hypothetical |
| Prev Year: | 2001 |
| Next Title: | Subsurface |
| Next Year: | 2004 |
Critical Mass is the sixth album by British progressive metal band Threshold. It was recorded in early 2002 and released in September. It is also the last album to feature original bassist Jon Jeary, who left immediately after the release. He was replaced by Steve Anderson, who appears on the live album Critical Energy and subsequent albums.