Ireneo Hermosilla (31 January 1928 - before 1 April 2003)[1] was a Paraguayan footballer.

He was part of Paraguay's squad that won the 1953 South American Championship.

[2] Hermosilla was selected in Paraguay's squad for the 1953 South American Championship.

[3] On 14 February 1954, during a 1954 FIFA World Cup qualification game against Chile Hermosilla scored his only goal for Paraguay.

[3][4] Hermosilla was also part of Paraguay's squad for the 1956 South American Championship during which he played four games.