After dying on July 4, 2025, both the Bruins and local outlets announced his death but did not reveal a specific cause.

“Lyndon was a fan favorite across his nine seasons in the Black & Gold thanks to his rugged, rough-and-tumble style,” the team said in their statement.

A statement on the passing of former Bruin Lyndon Byers. pic.twitter.com/aqit3sKKPG

— Boston Bruins (@NHLBruins) July 5, 2025

Yes. Lyndon’s wife, , shared news of his passing on Facebook, writing through someone else’s account, “This is Annie, LB’s wife. It is with deep regret that I have to announce that LB passed away yesterday morning. Will and I are still working to process this news and ask that you allow us the space to do so in private.”

She continued, “Please know (or, as LB would have said, ‘not for nothin’’) we recognize how many people loved and cared for him and considered him a friend. Keep LB in your memory, remember his smile, and know how much he cared about all of you.” She also noted that a memorial service for Lyndon would be planned soon.

Lyndon is survived by one son, . Both the Bruins organization and Boston news outlets extended condolences to Annie and Will.

“Lyndon became a true Bostonian and we will miss him dearly. He is forever a part of our Bruins family,” the team added in its statement. “Our thoughts are with his wife, Annie, and son, Will, during his very difficult time.”