Commercial director Steve Coakley was delighted with the news, speaking to themillers.co.uk.
"This is another piece of very positive news as we look to develop Rotherham United over the next few years", said Steve.
Perrys Regional Director Darren Ardron, grandson of former Millers legend Wally, added: "We have seen a massive improvement on the commercial side at the club over the last six months. We are committed to working with the club for at least the next two years and as the club continues to grow we want to grow with them."