Andrew Parmley will replace current lord mayor Jeffrey Mountevans from 11 November, with the lord mayor's show following the next day.
Parmley is currently principal of the Harrodian School in Barnes, and has experience in the creative industries, education and music. He has been a City common councilman since 1992.
In his one year term, he will serve as an ambassador for the UK's financial and professional services industry, and the Manchestor-born educator will also seek to champion the Northern Powerhouse, as well as wider economic regeneration.
Parmley said he would also trumpet the cultural value of the City of London.
“The City of London Corporation is proud to support a number of high-performing schools and flagship academies and we are committed to increasing the skills and employability of young people across London,” Parmley said.
“We also have ambitious plans to build a world-class Centre for Music and relocate the Museum of London to boost the fantastic arts and culture opportunities in the Square Mile.”
The City of London Corporation is the UK's fourth biggest investor in culture after the government, the BBC and the Heritage Lottery Fund, and is the primary backer of The Barbican Centre.
It also backs the Guildhall School of Music and Drama, the London Symphony Orchestra and the Guildhall Galleries.