“有其父必有其子”，汉语成语，字面意思是“有什么样的父亲就会有什么样的儿子”，表示“孩子的行为举止通常与父母相似（a child usually behaves in a similar way to his or her parent(s)）”，含有贬义。
与英文谚语“like father, like son”意思相近，表示“a son's character or behaviour can be expected to resemble that of his father”。
- 小吉姆原来和他爸爸一样懒，真是有其父必有其子。
Young Jim is turning out to be as lazy as his dad — like father, like son. - - 吉尔：乔治的父亲总是抽烟，而现在乔治也吸烟。
- Jill: George's father smoked all the time, and now George is smoking too.
- 简：有其父必有其子吧。
- Jane: Like father, like son, eh?
