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Rustlers are Europe's leading brand for proper flame-grilled burgers that are quick to prepare and they will become an official sponsor of the Republic of Ireland teams.
In addition, Rustlers - who are part of the Kepak brand - will also become the new title sponsor of the Colleges and Universities competitions to be relaunched in September 2017.
John Delaney, FAI CEO, said: "We are delighted to enter into this sponsorship arrangement with Rustlers and everyone connected to Kepak. They are an Irish-owned company who have enjoyed tremendous success in recent years and I'm sure they will be fantastic partners.
"What is most pleasing about this link up is that Rustlers will focus heavily on the Colleges and Universities competitions, which for many years now the IUFU, CFAI and WSCAI have played an important part in our footballing development. Their competitions have helped to produce many players for both the SSE Airtricity League and Continental Tyres Women's National League."
Adrian Lawlor, Marketing and Business Development Director for Kepak, said: "This is a really exciting move for us at Kepak. The Rustlers brand has been a great Irish success story and we hope to build on that success with our partners in the FAI and the Republic of Ireland team.
"A key part of this sponsorship will be our support for the Third Level Competitions, under the guidance of the IUFU, CFAI and WSCAI. Plans are in place to work with the FAI to grow both participation of players and fun engagement for football supporters around those competitions, which are an important pillar of football development in Ireland."