- Stage Names: T.O.P, Tempo
- Real Name: Choi Seung Hyun (최승현)
- Birthdate: November 4, 1987
- Height: 180cm
- Weight: 65kg
- Blood type: B
- Education: Seoul Art College (majoring in Music)
- Skills: Rapping, beat boxing, composing
- Hobbies: Reading and swimming
- Likes: Theatrical performances, musicals, and fashion designing
T.O.P, before joining BIGBANG, was a well known underground rapper. At that time he was known as "Tempo". He performed in clubs since 2003 to 2005 gaining much popularity.
In 2009, he was announced as part of the cast for the TV drama IRIS. Participating in one of the most expensive Korean dramas and also with highest ratings, it has consolidated him as an actor.
In 2010, T.O.P got one of the main roles in the film 71-Into the Fire, a movie that was inspired by the real story of a found letter from one of the 71 deceased students who fought against North Korean soldiers during the Korean War. On that same year, in June 2010, he also released his first solo single "TURN IT UP".
- [2007.04.19] Lexy - Rush (#7 Super Fly (feat. G-Dragon, T.O.P & Taeyang)
- [2008.03.12] Gummy - Comfort (#3 Mianhaeyo (Feat. T.O.P))
- [2008.06.13] Uhm Jung Hwa - D.I.S.C.O (#3 D.I.S.C.O (Feat. T.O.P))
- [2008.07.14] Zi-A - Road Movie (#6 Geudaeman Boyeoyo (feat. BIGBANG T.O.P))
- [2010.07.21] SE7EN - Digital Bounce (#2 Digital Bounce (feat. T.O.P))
- [2007.07.12] Red Roc - Hello
- [2008.03.12] Gummy - Mianhaeyo (미안해요)
- [2008.06.13] Uhm Jung Hwa - D.I.S.C.O
-  SK Telecom MMS T PLAN
- Amureochi Anheun Cheok (Lyrics & Music)
- BAE BAE (Lyrics & Music)
- BANG BANG BANG (Lyrics)
- Banjjak Banjjak (Rap Lyrics)
- BIG BOY (Lyrics & Music)
- Byulkeun Noeul (Rap Lyrics)
- Chakhan Saram (Lyrics & Music)
- Forever With You (Lyrics)
- Good Bye Baby (Rap Lyrics)
- Intro [Stand Up] (Lyrics)
- Keojitmal (Rap Lyrics)
- Lollipop Pt. 2 (Lyrics)
- LOSER (Lyrics)
- Majimak Insa (Rap Lyrics)
- Meongcheonghan Sarang (Rap Lyrics)
- O.A.O (Rap Lyrics)
- Remember (Rap Lyrics)
- We Belong Together (Lyrics)
- WE LIKE 2 PARTY (Lyrics)
- Wonderful (Rap Lyrics)
- BABY GOOD NIGHT (Lyrics & Music)
- HIGH HIGH (Lyrics)
- Jjeoreo (Lyrics & Music)
- OH, MOM (Lyrics & Music)
- OH YEAH (Lyrics)
- Oneulttara (Lyrics & Music)
- Ppeogigayo (Lyrics & Music)
-  47th Daejong Film Awards "Hallyu Popularity Award"
-  Style Icon Awards "Best New Actor"
-  31st Blue Dragon Film Awards "Best New Actor" & "Most Popular Actor"
-  Max Movie Award "Best New Actor"
-  47th Baeksand Awards "Best New Actor" & "Popularity Award (Actor (Motion Picture))"