Mornantau "Nantie" Hayward (born 6 March 1977) is a South African former cricketer, who played in 16 Test matches and 21 One Day Internationals for the national team between 1998 and 2004. He played as a right-arm fast bowler, who, according to Peter Robinson, had "genuine pace, the ability to get bounce and abundant energy".^[1] He played for Derbyshire until his retirement from all cricket in 2012.

At the time of Robinson's article, "Hayward [was] clearly seen as the successor to Allan Donald as the spearhead of the South African attack."^[1] However Hayward did not play a Test match after August 2004 or a One Day International after April 2002. Steve Waugh appears to have reached this conclusion in his autobiography, saying that: "I'm amazed he didn't...become world-class...a collective cheer went up in the Australian camp whenever his unpredictable raw pace was overlooked [by the South African selectors]."^[2]

He played for Ireland in the 2007 Friends Provident Trophy.^[3]