Fry shared a picture of the couple signing the register in Dereham, Norfolk, with his 8 million Twitter followers.
He said: “Gosh, @ElliotGSpencer and I go into a room as two people, sign a book and leave as one. Amazing.”
Two weeks ago Stephen Fry said on Twitter that he was “very very happy” to announce that he and 27-year-old writer Elliot Spencer were to marry.
“Oh. It looks as though a certain cat is out of a certain bag. I’m very very happy of course but had hoped for a private wedding. Fat chance!”
The pair are thought to have started their relationship last year.
Fry, who has spoken openly about his struggles with drug abuse and depression, has largely kept his love life private.
It’s thought he separated from a long-term partner five years ago.
Fry is a director of Norwich City Football Club and has been a familiar face on television since the 1980s.
He’s most recently known for presenting the comedy quiz show QI, as well as for acting roles in The Hobbit and the latest series of 24.
