The Spurs striker came out on top against other nominees Oscar, Dwight Gayle, Santi Cazorla and Jose Fonte after scoring 5 Premier League goals in January, including a double in his side's 5-2 win over Chelsea.
He looks a decent shout for the February award too, with 5 goals already in just 3 games, taking his total for the season to 23 in all competitions.
Ronald Koeman picked up the manager award for the second time this campaign, with wins over Arsenal, Man Utd and Newcastle ensuring Southampton took maximum points from their January fixtures.