FA reject Hull City name change
The Council's decision - carried by a 69.9% vote of its members - followed the recommendation of the governing body's membership committee.
The club's first attempts to change the name were blocked by the council in 2014.
Owner Assem Allam warned he would sell Hull if the change does not happen.
Hull, relegated from the Premier League last season, were told in March they could make a new attempt to change their name.
Allam, who has faced protests from the club's fans over the issue, is convinced that rebranding the club is the only way to bring new investment in from overseas markets.