Cecil Mary Nowell Dering Craig, Viscountess Craigavon, DBE (née Tupper; 22 January 1883 – 23 March 1960) was an English-born Ulster Unionist activist and politician in Northern Ireland.

[1] Cecil Mary Nowell Dering Tupper was born at 26 Chester Terrace, Belgrave Square, London on 22 January 1883.

In 1904 she met her future husband, James Craig, 1st Viscount Craigavon at a shooting party in County Tyrone.

Craig was a founding member of the Ulster Women's Unionist Council (UWUC), serving as vice-president from 1912 to 1923 and president from 1923 to 1942.

[1] Due to her husband's poor health, she took responsibility for many of his public duties during the 1937 royal visit to Northern Ireland.