Taking place from 23 July to 2 August, the Games’ 10 sports and six para sports , externalinclude 3×3 wheelchair basketball, swimming, artistic gymnastics, athletics, bowls, netball and track cycling.
More than 3,000 athletes from 74 nations are set to take part.
Glasgow last hosted the Commonwealth Games in 2014.
BBC Alba broadcasts programmes in Gaelic including on current affairs, children’s entertainment and drama.
Earlier this year, it showed a package of eight live Serie A football matches showcasing Italy-based Scots as they prepared for this summer’s World Cup.
BBC Alba said it would be providing Gaelic-language Commonwealth Games coverage from the opening to the closing ceremonies.
Presenter Derek Murray will head up its commentary team.
Margaret Mary Murray, head of BBC Gaelic Services, said: “This is a historic opportunity for BBC Alba and the Gaelic language to be at the heart of broadcasting a global sporting event to audiences.
“It is a privilege to have the opportunity to showcase the world’s finest athletes competing at the Glasgow 2026 Commonwealth Games and to bring all the thrills and magic moments to audiences wherever they are.”
Phil Batty, chief executive of Glasgow 2026, said BBC Alba was a “brilliant addition” to the games.
He said: “These Games belong to everyone and that means making sure every community across Scotland can follow the action in a way that feels close to home.
“Bringing live coverage to audiences through the Gaelic language reflects everything we want this partnership to stand for – a Games that’s for everyone.”
