Marlene Dayman (born 14 October 1949) is an Australian former swimmer.
She competed in the women's 100 metre backstroke at the 1964 Summer Olympics.
[1][2] Earlier she had defied an instruction from the Australian Swimming Union not to march in the opening ceremony.
Dayman is the daughter of music promoter, talent manager and record label owner, Ivan Dayman.
This biographical article related to an Australian swimmer is a stub.