| Country | Title | Year | Avg. (nb) | ||
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| Hong-Kong | The Undercover Madams | 2003 | 0.25 (1 Reviews) | ||
| Undercover Punch and Gun | 潛龍狙擊 | 2019 | |||
| Undercover vs. Undercover | 臥虎潛龍 | 2019 | |||
| The Underground Banker | 1994 | 3.71 (13 Reviews) | |||
| Underground Express | 1990 | 3.75 (6 Reviews) | |||
| Underground Judgement | 1994 | 1.5 (2 Reviews) | |||
| Undiscovered Tomb | 奪寶英雄 | 2002 | 0.83 (3 Reviews) | ||
| Undress Me | 1996 | ||||
| Unexpectable Killing | 1999 | ||||
| Unexpected Challenges | 2000 | 3 (1 Reviews) | |||
| Unexpected Promotion | 1966 | ||||
| Unfaithfully Yours | 1989 | 2.5 (2 Reviews) | |||
| Unfinished Melody | 1969 | 2 (1 Reviews) | |||
| Unforgetful Holiday | 1992 | 1.5 (1 Reviews) | |||
| Unforgettable Fantasy | 小狐仙 | 1985 | 2.67 (3 Reviews) | ||
| Unforgettable First Love | 1967 | ||||
| The Unforgettable Night | 一夜風流 | 1958 | |||
| Ungrateful Tink | 反骨仔 | 1999 | 2.5 (3 Reviews) | ||
| Unicorn Fortress | 1968 | ||||
| Uniform Temptation | 制服的挑逗 | 2003 | |||
