Susan, Lady Renouf (born 1940) is an Australian socialite.
Born Susan Rossiter to Sir John Rossiter and Joan Stewart, she was married three times:
- to Andrew Peacock, prominent Australian politician (in 1963)
- to Robert Sangster, British gambling tycoon (in 1978)
- to Frank Renouf, New Zealand financier (in 1985)
In 1968, she was the focus of a minor political scandal in Australia when she appeared in a TV advertising campaign for bed sheets while her (then) husband, Andrew Peacock, was a Minister in the Australian Federal Government.
In 1988, her third husband, Sir Frank Renouf, outlaid what was at the time the highest-ever price for a Sydney home, when he bought the mansion "Paradis sur Mer" in Wolseley Crescent at Point Piper, where the vendor was her second husband, Robert Sangster. The house was eventually razed.
In 2013 it was reported that Lady Renouf had been diagnosed with cancer.