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| Hong-Kong | Ordinary Heroes | 千言万语 | 1999 | 3.21 (7 Reviews) | |
| Out Of Inferno | 逃出生天 | 2013 | 2.5 (7 Reviews) | ||
| Oily Maniac | 油鬼子 | 1976 | 2.32 (7 Reviews) | ||
| Once a gangster | Fei saa fung chung chun | 2010 | 2.64 (7 Reviews) | ||
| Once Upon a Time in Triad Society 2 | 1996 | 2.93 (7 Reviews) | |||
| Osaka Wrestling Restaurant | 大阪撻一餐 | 2004 | 2.5 (7 Reviews) | ||
| Once Upon a Time a Hero in China | 黃飛鴻笑傳 | 1992 | 3.38 (6 Reviews) | ||
| Once upon a time in Shanghai | 惡戰 | 2014 | 3.1 (5 Reviews) | ||
| On His Majesty's Secret Service | 2009 | 3.2 (5 Reviews) | |||
| Office | 2015 | 2 (5 Reviews) | |||
| The Oath of Death | 1971 | 3.3 (5 Reviews) | |||
| Operation Pink Squad | 霸王女福星 | 1988 | 2.62 (4 Reviews) | ||
| Ode to Gallantry | 1982 | 2.44 (4 Reviews) | |||
| Only Fools Fall in Love | 呆佬拜壽 | 1995 | 3.31 (4 Reviews) | ||
| On Parole | 1993 | 2.83 (3 Reviews) | |||
| Operation Billionaires | 驚天大賊王 | 1998 | 2.17 (3 Reviews) | ||
| Overheard 3 | 竊聽風雲 3 | 2014 | 2.83 (3 Reviews) | ||
| On the Wrong Track | 毁滅號地車 | 1983 | 3.5 (3 Reviews) | ||
| One Way Only | 單程路 | 1981 | 2.67 (3 Reviews) | ||
| The Other Side of Gentleman | 君子好逑 | 1984 | 2.5 (3 Reviews) | ||
