《难兄难弟1979（粤语版）》是由甘国亮执导，郑少秋,冯淬帆,李香琴,刘雅丽主演的港台剧。该电视剧于1979年在中国香港上映。司马森（冯淬帆）和司马祥（郑少秋）年前丧父，兄弟俩接手经营亡父遗下的运输业务。哥哥森负责九龙区的生意，他辛勤工作，加上营运有方，结果成绩不俗；弟弟祥负责港岛区的业务，但他爱理不理，令公司亏损累累，反正他志不在此，只一心当专业马评人及专栏作家。森、祥跟姑母（李香琴）和姑母的小儿子一同居住，他们和顽皮的小侄儿常常跟姑母斗气，又喜欢以她为取乐的对象，惹来笑话连篇。森为人率直，快人快语，常常固执己见，甚至有点粗犷横蛮，对任职护士长的女友亦洁（陈嘉仪）则又畏又怕；祥生性风流，总抱著逢场作戏的心态结交女朋友，情人可谓多不胜数，有时也会惹起哥哥的妒忌。森和祥虽为同胞兄弟，但性格各异，待人接物的态度也大相迳庭，常常各执一词、互相斗嘴。究竟这对难兄难弟会闹出什麼笑料。
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