The Ibrox boss led the Gers to victories over St Johnstone, Kilmarnock, Dundee United, and Livingston, as well as a 1-1 draw at Hamilton.
Although not part of the award, the former Liverpool midfielder also oversaw 4-3 and 5-2 wins against Antwerp in the Europa League.
It is Gerrard’s seventh prize after success in April, September, and December 2019, and August, October and November 2020.
Speaking ahead of Rangers’ home match against St Mirren on Saturday, Gerrard said: “We set down a marker early, everything fell into place and we built on this.
"It is not just about having talented players. One of the main things is spirit, fight and finding a way to win.
"The most important thing is to get that trophy back, knock all the 54's off the wall for 55 and add to the wonderful history at this football club."