Cathleen Falsani, American journalist and writer
Cathleen Galgiani, American politician
Cathleen Nesbitt, English actress
Cathleen Rund, German Olympic swimmer
Cathleen Schine, American author
Cathleen Synge Morawetz, Irish-Canadian mathematician
Lady Cathleen Hudson, younger daughter of JohnGranville Cornwallis Eliot, 6th Earl of St Germans
Cathleen Davitt Bell, American blogger/writer Margo Cathleen Harshman, American actress
"Cathleen ni Houlihan" (1902), W.B. Yeats's play in which Kathleen ni Houlihan (a personification of Ireland as a woman, as Britannia is of Great Britain) appears as a mysterious wandering old woman who inspired the uprising of the United Irishmen in 1798.
Cathleen Calvert, character in "Gone With the Wind"