法律問題 印尼的遺囑在香港有效嗎？

In theory, yes. In practice, it will be difficult.

To make a will valid, the courts must have the ability to interpret the will. When a will is not written in an official language, the courts will have to rely on translation, which will increase the probate cost.

The question is the official language of Indonesia is Indonesian and the official languages of Hong Kong are Chinese and English. In that case, either Indonesian or Hong Kong courts will have difficulties.

The best way to do is to have separate wills to cover estates from each location.