In a close-run race with Simon Sluga and Glen Rea, Harry topped the poll with 32 per cent of the vote.
The former AFC Bournemouth man added an eighth goal to his tally for the campaign last month, netting in the 3-1 defeat to Charlton Athletic.
Junior Diamond season ticket holder Rhyan Dosanjh was pulled from the hat from those that voted for Harry – he will receive a Diamond mascot package for Saturday’s game against Preston North End.
Thank you to all Diamond season ticket holders that took the time to vote.
Pelly-Ruddock Mpanzu has won the award the most times this season, having been selected by Diamond season ticket holders on three separate occasions so far this campaign.