Which one is correct `是不是你想离开` or `你是不是想离开`?
Both 是不是你想离开 and 你是不是想离开 are correct and can mean the same.
However, it's worth to mention that in 是不是你想离开, when you put a tone emphasis on 你 like 是不是'你'想离开, it would mean Is it you that want to leave, implying it's you, not others.