The 16-year-old is reportedly in talks to appear in the play about a young man who blinds six horses in a torrid ritual. The classic, which caused a sensation when it was first staged more than three decades ago, explores what happens when the boy is sent to a psychiatrist.
Kenneth Branagh will direct the play in the West End around January 2007, when he completes his film of the opera The Magic Flute.
According to the Daily Mail, Radcliffe, who had worked with Branagh in the comedy show The Play What I Wrote, plays a major role in Equus, and at one point will be required to reach the height of sexual pleasure while riding naked on his horse.
A spokesman for Equus producer David Pugh said it was too early to comment on the production, while Radcliffe's representatives said that there were always rumours about their client.
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