His job description is producer, DJ and musician, but in the eyes of gossip columnists and fashion types, he is a style icon, a playboy, a suited and booted man about town.
Then there's the fact that he's not short of a bob or two, and he's nearly always got a gorgeous lady on his arm.
For a while he was dating Daisy Lowe, 14 years his junior, but for the past 18 months he has been with the absurdly beautiful French model and actress Josephine de la Baume, who, he beamingly tells me, is "super-talented and amazing" and who pops up in the video for his new single "The Bike Song" riding a bicycle in buttock-skimming skirt and knee-socks.
Ronson's mother, Anne Dexter-Jones, was a New York socialite who later married Mick Jones, the guitarist with Foreigner.
The pair were famed for their dinner parties where the guests were said to have included David Bowie, Mick Jagger and the Mc Cartneys.
Following the divorce, his mother moved Mark and his two sisters to New York; the children would visit their father in the school holidays. I mean, kids can make fun of you for having the wrong shoelaces, that's just kids.
But I don't think I had any trouble making friends." Clearly, a certain easy sociability is in his genes.
He was beside himself with excitement at meeting Le Bon, since Duran Duran are one of his favourite bands from childhood.
When he was nine, he put a band together especially so he could play "Wild Boys" at the school talent show.
"I don't think any of us would change the way it all worked out." Ronson reckons that a lot of the stories concerning his mother's parties have been made up – "mostly by my mother," he adds. There were always a lot of people around but I have to be honest, I just don't remember David Bowie being in my house." He does, however, remember being tucked into bed by Robin Williams, who was a little the worse for wear at the time.
And, yes, there was a sleepover with Michael Jackson, about which Ronson won't say much other than that he met him through his friend Sean Lennon and that "nothing funny happened".
I certainly don't remember it being especially traumatic." Even so, for a while Ronson suffered panic attacks at night. You're in New York and everyone's making fun of you because you've got a funny accent so you quickly try and sound as American as possible.