Martha Anne Winch (born 31 October 1978) is an Australian former cricketer.
Winch played domestic cricket for the New South Wales Breakers between 1997 and 2007. She was a member of the Breakers team that won five consecutive Women's National Cricket League titles between 2005/06 and 2009/10, beginning with the 2005/06 finals series against the Queensland Fire.
Winch played seven One Day Internationals for the Australia national women's cricket team.