Robin Gibb said he and older brother Barry would no longer use the name under which they and their brother Maurice performed for more than 30 years.
"Anything we do, we will do together, but it'll be as brothers - not under the name of the Bee Gees, that will be reserved in history as the three of us," Robin Gibb told Britain's GMTV television show.
But, he said, the surviving siblings would continue to make music. "I think Maurice would want that."
Maurice Gibb died Jan. 12 at 53 after suffering a heart attack prior to undergoing emergency surgery for an intestinal blockage.
Robin Gibb said the death of his twin brother was like "losing your soul mate."
The brothers formed the Bee Gees - short for the Brothers Gibb - in the 1960s and recorded a string of No. 1 hits, selling more than 110 million records
They became a falsetto-voiced disco sensation during the 1970s with hits from the movie "Saturday Night Fever," including "Stayin' Alive" and "Night Fever."