Deanne (Dee) Sharon Ryall (born 16 June 1967) is an Australian politician.
She was a member of the Victorian Legislative Assembly representing the electorate of Mitcham for the Liberal Party from 2010 to 2014 and Ringwood from 2014 to 2018.
She was involved in business for 15 years as a specialist in management systems.
Ryall contested the 2010 Victorian State election in the marginal electorate of Mitcham in metropolitan Melbourne, representing the Liberal Party, winning 52.90% of the vote after preferences had been distributed.
Mitcham had been held by Brumby Government Minister Tony Robinson on a margin of 2%.