Simma Holt, CM (née Milner, born March 27, 1922) is a Canadian journalist, author, and a former member of the Canadian House of Commons.
Born in Vegreville, Alberta, she received a Bachelor of Arts degree in 1944 from the University of Manitoba. That same year she joined The Vancouver Sun as a reporter, feature writer, and columnist. In 1949, she married Leon Holt.
In the 1974 election, Holt was elected to the Canadian House of Commons as the Liberal candidate for the British Columbia riding of Vancouver Kingsway. She was defeated in the 1979 election and the 1980 election.
In 1996, Holt was made a Member of the Order of Canada for her "lifetime commitment to assisting those suffering from injustice, persecution and poverty".