The 26-year-old has scored nine goals for Charlton since his arrival in January from Plymouth, where he had already hit the net 13 times this season.
Wright-Phillips, who signed an 18-month deal with the Addicks, told the club's official website: "I'm delighted. It's a real honour for me to be seen as one of the best players in League One this season.
"Obviously, I'm pleased with my goal tally this term and hopefully I can get a few more before the end of the season."
Wright-Phillips also spoke of his disappointment at Charlton's slide down the table.
He added: "We aren't happy with falling away from the play-off places this season, but we're all looking forward to next term and trying to get this club back where it belongs."
Source: PA
Source: PA