The couple will exchange vows at St George's Chapel in Windsor Castle, England.
Kensington Palace made the official announcement with a formal statement.
It read: Prince Harry and Ms. Meghan Markle are hugely grateful for the many good wishes they have received since announcing their engagement. They are very much looking forward to the day and to being able to share their celebrations with the public. They have made the following decisions about their wedding day on Saturday 19th May, 2018.
The Wedding Service will begin at St George's Chapel at 1200. The Dean of Windsor, The Rt Revd. David Conner, will conduct the Service. The Most Revd. and Rt Hon. Justin Welby, Archbishop of Canterbury, will officiate as the couple make their marriage vows.
At 1300, the couple, now married, will undertake a Carriage Procession along a route from St George's Chapel, leaving Windsor Castle via Castle Hill and processing along the High Street and through Windsor Town, returning to Windsor Castle along the Long Walk. They hope this short journey will provide an opportunity for more people to come together around Windsor and to enjoy the atmosphere of this special day.
Following the service, there will be a reception at St George's Hall for the couple and guests from the congregation. The couple will join this on return from the Carriage Procession.
Later that evening, The Prince of Wales will give a private evening reception for the couple and their close friends and family.
We look forward to sharing further details about the wedding day in the weeks and months ahead.
The news will delight Royal followers all around the world after the couple announced their engagement in November, 2017.
The pair have been dating since July 2016 and were first revealed as a couple in October 2016.
Prince Harry, 33, gifted former Suits star Markle, 36, with a custom made $1 million three carat cushion cut diamond with two side diamonds flanking the center stone, when their engagement was announced.
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