Louis Koo and Johnnie To have appeared together in 10 films between 2002 and 2016, with a combined box office of CN¥100.4 million. Every shared film with year, roles and gross, plus who else each works with most.
| Year | Film | Box office |
|---|---|---|
| 2002 | Fat Choi Spirit | HK$19.2 million |
| 2004 | Throw Down | HK$8.2 million |
| 2005 | Election | $2.2 million |
| 2006 | Election 2 | $1.8 million |
| 2007 | Triangle | $4.6 million |
| 2011 | Don't Go Breaking My Heart | $2.2 million |
| 2012 | Drug War | $24.7 million |
| 2012 | Romancing in Thin Air | |
| 2014 | Don't Go Breaking My Heart 2 | $31.6 million |
| 2016 | Three | CN¥100.4 million |
Louis Koo also often with: Sean Lau (11), Gordon Lam (10), Lam Suet (10), Daniel Wu (9), Cheung Siu-fai (8)
Johnnie To also often with: Lam Suet (25), Simon Yam (12), Wai Ka-Fai (12), Sean Lau (11), Andy Lau (10)