Joan Heywood Chambers, née Murray (18 March 1930 – 29 August 2016) was an Australian politician.
She was born in Elsternwick to company manager James McNab Murray and Annie Hale Shaw.
On 21 November 1953 she married Major John Alexander Chambers, a soldier-turned-farmer; they had six children.
Chambers joined the Liberal Party in 1969 and held a number of positions including secretary of the Alfredton branch (1978–81), a member of the federal electorate council for the Division of Wannon, and a member of the state executive (1977–78).
She unsuccessfully sought preselection for Warrnambool in 1983, and ran again for Ballarat South in 1988, losing narrowly and taking the result to the Court of Disputed Returns.