On 18 September, people across Scotland will face a massive choice - whether or not to become an independent country, separate from the United Kingdom.
A referendum asks you to vote yes or no to a question or proposal.
The people of Scotland will be asked the simple question: "Should Scotland be an independent country?"
Scotland has been part of the UK for more than 300 years, so the vote is a huge moment for the country.
There are loads of questions that people in Scotland, and the rest of the UK want to know the answers to.
We asked you what questions you had about the vote and you sent us lots of great ones in.
The BBC's political reporter Chris Mason was tasked with answering them for you.