Martin Egan, a driver with First Bristol, died on 28 March after being diagnosed with COVID-19 two weeks prior.
First West of England Managing Director James Freeman said: “Our deepest sympathies and condolences go out to his family and friends.
“Martin was a hugely respected member of our team and I know this will be devastating news for his colleagues and customers that got to know him over the years.
“Martin last drove a bus more than two weeks ago, before he was taken ill. We have identified those that we understand had come into recent contact with him, including supervisors and drivers, and they have since been in self-isolation.
“He started as a driver at our Muller Road depot in 1980 and then moved to our Lawrence Hill operation later in his career.
“Personally, I will always remember his huge smile when we recently launched our new gas buses in Bristol. His presence around the depot will be greatly missed.”