The Football League has confirmed that Steve Evans, Kenny Jackett, Steve Cotterill and Mark Warburton are the nominees for March's Manager of the Month award.
Rotherham United boss Evans has seen his side's unbeaten run, which dates back to the start of 2014, continue as they picked up 17 points from seven games, including a victory over promotion hopefuls Brentford.
Leaders Wolverhampton Wanderers managed to score 18 times in March, picking up 19 points in the process to ensure that Jackett's team remain on course for a return to the Championship.
Cotterill guided Bristol City away from the relegation zone thanks to an unbeaten run of six games in March, which was only ended by Rotherham last Saturday.
Warbuton's Brentford players, who kept four clean sheets in the month, took a big step towards automatic promotion thanks to a crucial 1-0 win over Leyton Orient