Over the course of election night on May 6, the number of seats gained by the largest Westminster parties will be beamed onto the London landmark.
The projection will commence when the first results come in and keep updating until the final result is declared at around 5.30am on May 7.
According to the BBC, the initiative is designed to deliver a clear, simple and also visually striking source of information on one of the most interesting elections of recent times.
With just three days of campaigning left before voting begins, the opinion polls still suggest that the election is finely balanced, with no party holding an overall majority.
The projected graphic, which is to be beamed onto the side of St Stephens Tower close to the Houses of Parliament, will show a tally of seats won by Labour, the Conservatives and Liberal Democrats, along with wins by smaller parties.
Speaking to BBC News, BBC Election Night editor Craig Oliver said: "We're delighted Parliament is joining with the BBC to project the results onto Big Ben for the first time ever."
Under a joint deal between the BBC, ITN and Sky News, details of an exit poll by NOP/Mori will also be beamed onto Big Ben shortly after voting closes on May 6.
A "winning line" will further show the 326 seats required for any party to secure an outright victory. The projection has been approved by parliamentary authorities and will not carry any BBC branding.