Maynard beat nine other contenders including Lana Del Rey, Charli XCX and Delilah.
He told MTV: "It's such an amazing feeling winning MTV's Brand New 2012. I can't thank the fans and viewers enough for voting, and MTV for selecting me in the first place!" He added: "Hope this is the first success of many to come!"
Previous MTV Brand New award recipients who haven't done that badly for themselves include Lady Gaga, Justin Bieber, Jessie J and Tinie Tempah.
Conor Maynard's debut single 'Can't Say No' is out on April 29 and can be pre-ordered here.