He has been followed by fellow director Alan Cartledge, leaving a board of Chairman Denis Coleman and directors Dave Costin and Giles Brearley.
"We have been involved since the inception of the new board and have seen the club make progress. We believe this is the best time to step down from the board.
"We have really appreciated the backing from the Millers' fans over the last few months and will be back at Millmoor whenever we can," added Mr Cartledge.
Chief operating Officer Paul Douglas explained: "With Dino and Alan making this decision, we would like to thank them both for the tremendous contributions they have made to the survival of the club. They deserve special credit for what they did for Rotherham United. They were prepared to have a go back in March where others didn't.
"They will be always welcome at the club and we look forward to seeing them again whenever they can get down to Millmoor."
MillersMAD would also like to express our thanks to Dino and Alan, for assisting to help us build a relationship with the new regime. All the best in the future, and who would rule out a possible return later down the track?.....