| Country | Title | Year | Avg. (nb) | ||
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| Hong-Kong | Oh! My Cops | 1983 | 2.5 (2 Reviews) | ||
| The Other Side of Gentleman | 君子好逑 | 1984 | 2.5 (3 Reviews) | ||
| Opium and the Kung-fu Master | 1984 | 3.5 (10 Reviews) | |||
| The Occupant | 靈氣迫人 | 1984 | 2.56 (8 Reviews) | ||
| The Owl and Dumbo | 貓頭鷹與小飛象 | 1984 | 3.03 (9 Reviews) | ||
| The Other 1/2 and the Other 1/2 | 我愛太空人 | 1988 | 2.75 (1 Reviews) | ||
| One Husband Too Many | 一妻兩夫 | 1988 | 2.5 (1 Reviews) | ||
| On the Run | 亡命鴛鴦 | 1988 | 3.71 (39 Reviews) | ||
| The Outlaw Brothers | 1988 | 3.54 (19 Reviews) | |||
| Operation Pink Squad | 霸王女福星 | 1988 | 2.62 (4 Reviews) | ||
| Operation Pink Squad 2 | 1989 | 3.67 (3 Reviews) | |||
| Off Track | 馬路英雄 | 1991 | 3 (2 Reviews) | ||
| Armour of God 2 : operation Condor | 飛鷹計劃 | 1991 | 3.83 (49 Reviews) | ||
| Operation Scorpio | Jie zi zhan shi | 1991 | 3.41 (33 Reviews) | ||
| Once a Thief | 縱橫四海 | 1991 | 3.16 (66 Reviews) | ||
| Once a Black Sheep | 1992 | 2.88 (2 Reviews) | |||
| Once Upon a Time a Hero in China | 黃飛鴻笑傳 | 1992 | 3.38 (6 Reviews) | ||
| On Parole | 1993 | 2.83 (3 Reviews) | |||
| The Other Side of Dolls | 1993 | 1.5 (2 Reviews) | |||
| Obsession | 1993 | 1.62 (2 Reviews) | |||
