| Theory of Everything | |
| Type: | Studio |
| Artist: | Children Collide |
| Cover: | Theoryofeverything.jpg |
| Released: | 27 August 2010 |
| Recorded: | Sound Factory, Hollywood, CA, United States; Sonora Recorders, Atwater Village, CA, USA; Studio One, Collingwood, Vic, Australia |
| Genre: | Rock, indie rock, grunge |
| Length: | 42:46 |
| Label: | Universal |
| Producer: | Rob Schnapf, Paul "Woody" Annison |
| Prev Title: | The Long Now |
| Prev Year: | 2008 |
| Next Title: | Monument |
| Next Year: | 2012 |
Theory of Everything is the second studio album by Australian indie rock band Children Collide. The album was recorded in Los Angeles and Melbourne, Australia. It was produced by Rob Schnapf in the United States and Woody Annison in Melbourne. The album was released by Universal in Australia on 27 August 2010. The first single, "Jellylegs", was released on 18 June 2010, and reached number 72 on the Australian ARIA Charts.
Several different special editions of the album were made available for pre-orders via the Children Collide website and other online stores. These included limited edition Tarot cards and limited edition singles.