The firm has been the sole sponsor of the competition for the past 25 years.
Minister for Regional Economic Development, Michael Ring, welcomed the announcement.
He said: "This competition has been running for almost 60 years and is stitched into the fabric of so many communities in Ireland and those communities benefit from the tireless work of the TidyTowns committees and volunteers.
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"Given SuperValu's strong emphasis on working closely with the communities in which they do business and their impressive record in reducing their environmental impact, I think they are an excellent fit for this competition.
"Volunteering within your own community, for the benefit of your community, helps to strengthen ties and develop a sense of place, a place where people belong. As we look to the 60th Anniversary of the competition in 2018, I am happy that its future is bright."
(CD/LM)
