Robert Donati (June 4, 1940 – c. September 21, 1991) – who went by Bobby and was also known by the nickname Bobby D – was an American career criminal. Along with his twin brother Richard, he was associated with the New England-based Patriarca crime family. His criminal history dates to 1958, when he was 17. He and his brothers were long believed to be part of the Angiulo Brothers' crew, with whom they carried out burglaries.