O'Flynn is a surname of Irish origin which may refer to:
Andrew O'Flynn (born 1946), Irish retired hurler Audrey O'Flynn (born 1987), Ireland women's rugby sevens international Catherine O'Flynn (born 1970), British writer Críostóir Ó Floinn (1927–2023), Irish writer who, when writing in English, used the anglicized form O'Flynn Dennis Flynn (Canadian politician) (1923–2003), born O'Flynn, Irish-born Canadian politician and Chairman of Metropolitan Toronto Diarmuid O'Flynn, Irish 21st century sports writer, activist and politician Francis Edward O'Flynn (1872–1942), New Zealand politician Frank O'Flynn (1918–2003), New Zealand politician Joe O'Flynn (), Irish trade union leader and former politician John O'Flynn (disambiguation) Johnny O'Flynn (born 1936), Irish former Gaelic footballer Kate O'Flynn (born 1986), British actress Ken O'Flynn, Irish politician Liam O'Flynn (1945–2018), Irish musician Margaret O'Flynn (1920–2014), British gynaecologist and pioneer of contraception services for women Patricia Strauss (1909–1987), née O'Flynn, British politician, feminist and patron of the arts Patrick O'Flynn (1965–2025), English journalist and politician Paul O'Flynn (Gaelic footballer) (born 1985), Irish Gaelic footballer Paul O'Flynn (journalist) (born 1985), Irish television reporter Robbie O'Flynn (born 1997), Irish hurler Stephen O'Flynn (born 1982), Irish retired footballer
See also Flynn, a surname Ó Floinn, Irish surname