Rodolfo Jorge Walsh was an Argentine writer and journalist of Irish descent, considered the founder of investigative journalism in Argentina. He is most famous for his Open Letter from a Writer to the Military Junta, which he published the day before his murder, protesting that Argentina's last civil-military dictatorship's economic policies were having an even greater and disastrous effect on ordinary Argentines than its widespread human rights abuses.

Irish Argentines are Argentine citizens who are fully or partially of Irish descent. Irish emigrants from the Midlands, Wexford and many counties of Ireland arrived in Argentina mainly from 1830 to 1930, with the largest wave taking place in 1850–1870. The modern Irish-Argentine community is composed of some of their descendants, and the total number is estimated at between 500,000 and 1,000,000.