Ryley Grantham (born January 7, 1988) is a Canadian professional ice hockey centre who is under contract to the Missouri Mavericks of the ECHL. He was selected by the Calgary Flames in the 6th round (168th overall) of the 2008 NHL Entry Draft.Before his professional career, Grantham played in the Tier II Junior "A" Alberta Junior Hockey League for the Brooks Bandits from 2004 to 2006 and then joined the Moose Jaw Warriors of the Western Hockey League.