Vodafone Ireland and Vodafone UK have come together to partner with the British and Irish Lions for the 2021 Tour of South Africa.
As lead partner, Vodafone's logo will be displayed on the front of the Lions' shirts.
The company will also provide communications technology to keep everyone involved in the tour connected and will also provide technical support for training and player performance.
Last September Vodafone Ireland signed an extension agreement to be principal sponsor of the Irish Rugby team and communications partner to the IRFU until 2024.
The agreement also saw Vodafone become official sponsor of the IRFU Women's Interprovincial Championship.
Anne O'Leary, Vodafone Ireland CEO, said the company has had a proud association with Irish rugby since 2016.
"Vodafone and the Lions are united by a shared passion and commitment to connect people to each other and the things they love - in this case, the highly anticipated Tour against the World Champions," Ms O'Leary said.
"We are looking forward to using the power of technology across Vodafone's network in Ireland to give fans the best ever experience, whether at home or on tour," she added.