Kane scored five times during March, netting against Arsenal in the 2-2 draw at White Hart Lane as well as grabbing doubles against Aston Villa and Bournemouth.
The England international’s goals means he is also the Premier League’s top scorer with 22, three ahead of Jamie Vardy, while his form has also helped Spurs stay in the hunt for the title.
READ MORE | 'Ranieri could replace Conte'
Ranieri, meanwhile, has kept Leicester at the top of the table where they remain seven points clear of second-placed Spurs with just six games left to play.
The Foxes took 10 points from a possible 12 in March with their 2-2 draw against West Brom at the start of the month followed by 1-0 wins over Watford, Newcastle and Crystal Palace.
This is the second time this season Ranieri has been named Manager of the Month, having picked up the award back in November.