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Ford's comments come as Dimbleby, the 72-year-old host of Question Time, is understood to be considering a new five-year deal, worth £3.5 million, to stay at the BBC.
Speaking to the Daily Telegraph, Ford, 67, said: "I wonder how these charming dinosaurs such as Mr Dimbleby and [BBC world affairs editor] John Simpson continue to procure contracts with the BBC, when, however hard I look, I fail to see any woman of the same age, the same intelligence and the same rather baggy looks."
Ford also expressed concern that any woman who speaks out, or draws attention to issues of ageism is "demonised as aggressive or strident".
In 2006, Ford left her post as a presenter on the BBC's One O'Clock and Six O'Clock news bulletins, after discussing fears that she would be dropped due to her age.
"I might have been shovelled off into News 24 to the sort of graveyard shift, and I wouldn't have wanted to do that because it wouldn't have interested me," she was quoted as saying at the time.
Last month, the BBC was found guilty of ageism after Miriam O'Reilly won an age discrimination case against the decision to drop her from BBC One show Countryfile when it moved to primetime.
Dimbleby reportedly threatened to resign last week over the BBC's plans to transfer the Question Time production base from London to Glasgow. However, he has since played down the possibility of him leaving the BBC for satellite broadcaster Sky, claiming that the chances of that happening are "not great".
