Click here to see the list of past winners.
In his fifth year at the club after signing permanently in 2017 (following an earlier loan spell), Watson has also scooped five other accolades from supporters' club groups
The 26-year-old has made a total of 45 appearances in all competitions for United so far this season.
Meanwhile, Jai Rowe has taken home two awards following a campaign in which he has made 40 appearances so far.
First year trainee goalkeeper Owen Foster, who was handed his first ever professional deal earlier this month and also made his professional debut on Saturday, was presented with the Young Player of the Year award.
Thanks to everyone who voted.
ACCOLADES
Study Parks POTY
Winner: Jai Rowe
SUFC Trust PFA Community POTY
Winner: Jai Rowe
SUOSC POTY
Winner: Rory Watson
Winterton Iron POTY
Winner: Rory Watson
Irish Iron POTY
Winner: Rory Watson
SULSESC POTY
Winner: Rory Watson
Iron Trust POTY
Winner: Rory Watson
Young POTY
Winner: Owen Foster
Ernie Storey Memorial POTY
Winner: Rory Watson
Winner: Rory Watson