According to London's Daily Mail, the revival of Peter Shaffer's play will open at a Shubert theatre-to-be-announced in September 2008.
Harry Potter star Radcliffe made his West End leading-role debut in Shaffer's 1973 drama at London's Gielgud Theatre on Feb. 27 following previews that began Feb. 16.
Radcliffe drew positive reviews from the London critics and lots of attention from gossip columnists because of the nude scene in which Radcliffe bares all.
Director Thea Sharrock, whose revival of Caryl Churchill's Cloud Nine has just opened at London's Almeida Theatre, will begin Equus rehearsals in New York during August.
Radcliffe plays the disturbed adolescent Alan Strang, an English stable boy who blinded six horses with a spike. Griffiths takes on the role of psychiatrist Martin Dysart, who attempts to discover the source of Strang's psychosis. Shaffer based the play on a true story told to him by a friend.
Equus reunited Radcliffe and Griffiths, who appeared together in the "Harry Potter" movies. Equus producers David Pugh and Dafydd Rogers gave Radcliffe his first role in the West End as a celebrity guest in The Play What I Wrote.
The London production of Equus was designed by the play's original designer, John Napier.