Avondale United was formed in
Ballintemple in 1972 with one junior team. They originally played in the
Cork Athletic Union League and remained members of this league until 1989. Youth and schoolboys sides were added in 1973–74 and 1974–75 respectively and in 1977–78 Avondale joined the
Munster Senior League. The club originally played on privately rented pitches or public spaces until they secured a long term lease on Beaumont Park. This ground is now the headquarters of the club's schoolboys section. In 1986, Avondale purchased land in
Carrigaline and developed the grounds into Avondale Park. In addition to winning an assortment of intermediate, junior, youth and schoolboy honours, Avondale has also enjoyed success at senior level, both nationally and provincially. They were quarter-finalists in the 1994–95 and
2014 FAI Cups. They have also been
Munster Senior Cup finalists on three occasions. Avondale were in the First Division of the Munster Senior League when
John Caulfield was appointed player/manager in 2002. He subsequently led them to the First Division title and, over the next five years, Senior Premier Division and FAI Intermediate Cup trophies. Avondale United became the first club from Cork to win back-to-back
FAI Intermediate Cups in 2007, beating
Bangor Celtic 1–0 in the 2006–07 final. The
2013–14 final saw Avondale win the cup for the fourth successive time, equalling a seventy two-year-old record held by
Distillery. The victory also meant that between 2006 and 2014, Avondale reached the final on seven occasions, winning six of them. In October 2024, the club voted to sell its grounds in Carrigaline, Avondale Park, for proposed residential development. ==Home grounds==