Apple chief executive Tim Cook has publicly come out as gay in an article he wrote in Bloomberg Businessweek.
Cook has never previously acknowledged his sexual orientation in public.
"So let me be clear: I'm proud to be gay, and I consider being gay among the greatest gifts God has given me," Cook said in the article.
He explained that friends and colleagues knew and it had not made a difference to the way he was treated.
He added:
Cook took over as head of the technology giant after the death of Steve Jobs in 2011.
He has an estimated worth of around £250m.