| Ma Yau/Die Hard (John Ma/Boomer in US version) | 成龙
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| Barbara | 张曼玉
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| Tarzan (Tyson in US Version) (as Teddy Robin) | 泰迪罗宾
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| Tammy | 利智
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| Rocky | 陆剑明
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| Crazy Kung | 黄志强
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| Hotel Staffer | 陈友
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| Hotel Manager | 陈欣健
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| Twins' Mother | 张艾嘉
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| Boss Wing | 张坚庭
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| Cashier | 张之亮
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| Car Mechanic | 林岭东
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| Orchestra Member | 张同祖
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| Hotel Security (as John Keung) | 姜大卫
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| Uncle Tang (Tammy's Father) | 楚原
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| Doctor | 刘家良
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| Gang Leader (as Lai Ying Chow) | 黎应就
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| Car Mechanic (as Ng Sze Yuen) | 吴思远
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| Priest (as John Wu) | 吴宇森
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| Man on Phone | 曾志伟
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| Car Mechanic | 徐克
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| Priest | 徐小明
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| Twins' Father | 黄沾
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| Thug | 王龙威
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| Waiter | 胡大为
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| Man with Boat (uncredited) | 陈国新
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| (uncredited) | 陈嘉上
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| (uncredited) | 程小东
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| Clerk in Sports Section (uncredited) | 高志森
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| (uncredited) | 刘家荣
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| Goon (uncredited) | 火星
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| Supernatural Doctor (uncredited) | 王晶
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| (uncredited) | 叶荣祖
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| Thug | 巴山 | |
