The Egyptian was presented with the trophy at Melwood on Friday in recognition of his sparkling form throughout the final month of 2018, pipping Virgil van Dijk and Xherdan Shaqiri to the prize following a poll on Liverpoolfc.com.
Salah netted seven goals in eight appearances during December to help the Reds maintain their push for Premier League and European success.
He struck a hat-trick during a 4-0 victory at Bournemouth before bagging the crucial only goal of the game to move the Reds into the last 16 of the Champions League with a 1-0 win against Napoli at Anfield.