The Norwegian scored nine goals in four appearances in the month, taking him to a club record 42 for the season.
His fifth goal in a remarkable performance against RB Leipzig saw him overtake the previous record of 38 set by Tommy Johnson in 1928/29.
That showing came between a decisive penalty to earn a Premier League win at Crystal Palace and his sixth hat-trick of the season in the FA Cup quarter-final with Burnley.
The 22-year-old leads the scoring charts in both the Premier League and Champions League with 28 strikes in 26 matches in the league and 10 goals in six games in Europe.
Now he takes home his third award of the campaign, beating Ruben Dias and Phil Foden, after winning the vote in August and September too.
Congratulations to Erling on this award and thank you to everyone who voted!
2022/23 Etihad Player of the Month winners
August: Erling Haaland
September: Erling Haaland
October: Manuel Akanji
November: Julian Alvarez
December: Riyad Mahrez
January: Riyad Mahrez
February: Jack Grealish
March: Erling Haaland