The England and Wales Cricket Board has signed a "ground-breaking" contract, agreeing NatWest not only as the new backer for domestic Twenty20 - currently sponsored by Friends Provident - but all short-format matches in this country, including internationals.
That will cover England's eight Twenty20 fixtures against Sri Lanka, India, New Zealand, Australia, Pakistan, the West Indies and South Africa in the contract period.
NatWest, whose backing of home one-day internationals concludes this year, will also become the lead sponsor of the national Twenty20 club competition and title sponsor of the women's Twenty20.
ECB chief executive David Collier said: "NatWest has been a wonderful and loyal supporter of cricket over the past three decades.
"ECB is delighted that this long-standing partnership will continue to flourish through NatWest's support of the Twenty20 format which, as we have witnessed this season, continues to attract a new and growing audience for cricket throughout England and Wales."