Katherine FitzGerald

• Katherine FitzGerald, Countess of Desmond, noblewoman of the Anglo-Norman FitzGerald dynasty in Ireland
• Katherine FitzGerald, Viscountess Grandison, wealthy Irish heiress
• Katherine A. Fitzgerald, Irish-born molecular biologist and virologist
• Katherine Fitzgerald, Lady of Hy-Carbery, Anglo-Irish noblewoman