The concert will take place June 4 at Manchester's Old Trafford stadium, according to The Hollywood Reporter.
Tickets will go on sale from June 1 via Ticketmaster, while those who were at Grande's Manchester Arena show can register for tickets via the benefit's website.
Proceeds from the concert will go to the British Red Cross and an emergency fund set up in the wake of the attack.
"The music community stands together with love and in solidarity. I am humbled to be a part of this show," Perry tweeted.
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Grande, Coldplay and other artistes also shared the concert poster on their social media accounts.
The 23-year-old singer announced her plans to return to Manchester in a note posted on Twitter last Friday.
Following the attack, the pop star canceled several dates on her European tour, but she is expected to resume her trek after the Manchester benefit show.
The Manchester attack left 22 dead and at least 60 injured. The bomber was identified as Salman Abedi, a 22- year-old British Man of Libyan descent.