Keith Hill from Hertfordshire.
The experienced Hill has reffed the Millers 10 times over his career, the last being the 1-1 draw at Southend last season, and the most memorable being the 6-0 thrashing of Millwall during the Championship years.
So far this season he's taken charge of 19 games showing 61 yellow cards and two reds.
Running the lines are Mr. I. Dudley (Nottinghamshire) and Mr. A. Greenwood (North Yorkshire).
The fourth official is Mr. M. Jones (Nottinghamshire).