After summing up the two days of "contradictory" evidence, Berkshire coroner Peter Bedford said he could not prove beyond all reasonable doubt that the businessman either took his own life or was unlawfully killed.
The body of the former Kremlin insider was discovered slumped on the bathroom floor at his ex-wife's luxury property in Ascot, Berkshire, with a ligature wound to his neck on March 23 last year.
While a report from a Home Office pathologist indicated there was "no suggestion of a violent struggle involving a third party", separate evidence from an expert on hanging and asphyxiation cases suggested Mr Berezovsky could have been strangled.
Members of the Berezovsky family declined to comment on the verdict as they left the court.
More top news
The wall, which is 30ft tall and 9ft wide, had been securely attached to a trailer by the Melton scouts' hut in Leicestershire.
A man has been charged after tomato ketchup was allegedly used to con and steal from elderly people.
The gigantic sinkhole dragged in three vehicles including a minivan near a construction site.