Guess Who's Back?, Amerikalı rapçi 50 Cent'in 2001 yılında çıkan compilation (toplama) albümü.
- "Killa Tape (Intro)" – 2:58
- "Rotten Apple" – 3:08
- "Skit/Drop" – 0:16
- "That's What's Up" (featuring Tony Yayo & Lloyd Banks) – 4:09
- "U Not Like Me" – 4:10
- "50 Bars" – 3:33
- "Life's on the Line" – 3:38
- "Get out the Club" – 4:22
- "Be a Gentleman" – 2:40
- "Fuck You" – 3:55
- "Too Hot" (featuring Nas & Nature) – 3:45
- "Who U Rep With" (featuring Nas & Bravehearts) – 4:21
- "Corner Bodega" – 1:34
- "Ghetto Qu'ran (Forgive Me)" – 4:29
- "As the World Turns" (featuring Bun B) – 4:15
- "Whoo Kid (Freestyle)" – 1:15
- "Stretch Armstrong (Freestyle)" – 1:19
- "Doo Wop (Freestyle)" – 2:25