Wake Up Sid! is the story of a lazy Mumbai college student who does absolutely nothing, with a turn of events will Sid realize his potential in this world and become a success in the fast-paced life of Mumbai.
| Actor | Role |
|---|---|
 Ranbir KapoorSidharth 'Sid' Mehra | Sidharth 'Sid' Mehra |
 Konkona Sen SharmaAisha Banerjee | Aisha Banerjee |
 Rahul KhannaKabir | Kabir |
 Anupam KherRam Mehra | Ram Mehra |
 Supriya PathakSarita Mehra | Sarita Mehra |
 Namit DasRishi | Rishi |
 Shikha TalsaniaLaxmi | Laxmi |
 Kashmera ShahSonia | Sonia |
| SShruti BapnaDebbie | Debbie |
| KKainaz MotivalaTanya Lathia | Tanya Lathia |