Margaret Rosalind Delacourt-Smith, Baroness Delacourt-Smith of Alteryn, née Hando, JP (5 April 1916 – 8 June 2010), known as Lady Delacourt-Smith from 1967 to 1974, was a British Labour politician.
She was created a life peer as Baroness Delacourt-Smith of Alteryn, of Alteryn in the County of Gwent on 5 July 1974.
Delacourt-Smith was married to Charles George Percy Delacourt-Smith.