The diary itself will be out of copyright, the book &quot;The Diary of Anne Frank&quot; - an edited version of the diary (by excision and addition of preface only, it seems) - will still be in part copyright protected.<p>Except possibly in some regions - I think France has an ongoing right to be named as author&#x2F;creator of your own works - once copyright expires then you could plagiarise the work without committing a legal wrong; though it would be morally reprehensible IMO.