Mark Killilea Jnr (5 September 1939 – 31 December 2018) was a farmer, auctioneer and agricultural contractor[1] who served as an Irish Fianna Fáil politician.

In a 30-year political career, served as a Teachta Dála (TD) and Member of the European Parliament (MEP) and also as a Senator.

Killilea Jnr was educated locally and first held political office in August 1969, when he was elected to Seanad Éireann on the Labour Panel and re-elected in 1973.

[3] The election was a landslide for Fianna Fáil and in particular showed the popularity of the party leader Jack Lynch.

In 2021, an Irish documentary made by Teresa Lavina, Untold Secrets, reported the testimony of Anne Silke, a survivor of the Tuam Mother and Baby Home, that she had been physically assaulted by Killilea Jnr on several occasions while in the foster care of his parents Mark Killilea Snr and his wife.