Magners (who also sponsor League1 Preston North End) is currently working with the club to develop a range of initiatives to support its partnership.
Celtic Chief Executive Peter Lawwell said: "On behalf of everyone at Celtic, I am delighted to welcome Magners as the club’s new shirt sponsor.
"This partnership is magnificent news, not only for Celtic but also for Scottish football. We are proud to be successfully leading Scottish football at home and in Europe.
"The desire of a brand with Magners’ stature to support the club is a measure of how much positivity there is around Celtic in our 125th year. I look forward to a long and successful partnership with Magners and I’m sure every Celtic fan will welcome their support.”
Tom McCusker, Managing Director of Magners, added: “Magners is a premium brand with huge ambition both at home and abroad, available in over 40 markets worldwide including key cider growth territories like the US, Australia, Canada and Asia.
"There is, therefore, a great fit with Celtic Football Club who also enjoy great success and popularity domestically and internationally. Everyone at Magners is looking forward to working with Celtic and its fans over the coming years in what promises to be an exciting time for the club and our brand.”
The pospect of further Champions League football next year, with Celtic sure to avoid the early preliminary rounds for making the top 16 this time round is an attractive bonus for the new sponsor.