Big Brother Day One (2001–2014) Online
- Original Title :
- Day One
- Genre :
- TV Episode / Game Show / Music / Reality TV
- Year :
- 2001–2014
- Directror :
- Simon Francis
- Cast :
- Gretel Killeen,Mike Goldman,Turkan Aksoy
- Writer :
- Andrew Farrell
- Type :
- TV Episode
- Time :
- 1h 10min
- Rating :
- 6.1/10
Twelve new housemates are introduced and sent into the Big Brother house.
| Episode credited cast: | |||
 | Gretel Killeen | - | Herself - Host |
 | Mike Goldman | - | Himself - Narrator (voice) |
| Rest of cast listed alphabetically: | |||
| Turkan Aksoy | - | Herself - Housemate |
| Aaron Benton | - | Himself - Housemate |
| Alex Christie | - | Himself - Housemate |
| Shannon Cleary | - | Herself - Housemate |
| Peter Corbett | - | Himself - Housemate |
| Jessica Hardy | - | Herself - Housemate |
| Damian Hoo | - | Himself - Housemate |
| Sarah Kearney | - | Herself - Housemate (as Sahra) |
| Nathan Martin | - | Himself - Housemate (as Marty) |
| Katrina Miani | - | Herself - Housemate |
| Nathan Morris | - | Himself - Housemate |
| Mirabai Peart | - | Herself - Housemate |