Countess of Kent is a title that may be held by a female in her own right or given to the wife of the Earl of Kent. Those who have held the title include:

Countesses of Kent in their own right Joan of Kent (1328-1385), daughter of Edmund of Woodstock, 1st Earl of Kent, and mother of King Richard II of England

Countesses of Kent by marriage Gytha Thorkelsdóttir (997–1069), wife of Godwin, Earl of Wessex Margaret of Scotland, Countess of Kent (1193–1259), wife of Hubert de Burgh, 1st Earl of Kent Margaret Wake, 3rd Baroness Wake of Liddell (1297-1349), wife of Edmund of Woodstock and mother of Joan of Kent Alice FitzAlan, Countess of Kent (1350-1416), wife of Thomas Holland, 2nd Earl of Kent Lucia Visconti (1372-1424), wife of Edmund Holland, 4th Earl of Kent Joan de Fauconberg, 6th Baroness Fauconberg (1406-1490), wife of William Neville, 1st Earl of Kent Lady Katherine Percy (1423–1475), wife of Edmund Grey, 1st Earl of Kent Anne Woodville (1438-1489), wife of George Grey, 2nd Earl of Kent Susan Bertie, Countess of Kent (1554-1596), wife of Reginald Grey, 5th Earl of Kent Elizabeth Grey, Countess of Kent (1582-1651), wife of Henry Grey, 8th Earl of Kent Mary Grey, Countess of Kent (died 1702), wife of Anthony Grey, 11th Earl of Kent Grand Duchess Maria Alexandrovna of Russia (1853-1920), wife of Alfred, Duke of Saxe-Coburg and Gotha