The Mid Cork Junior A Football Championship (known for sponsorship reasons as the Ross Oil Junior A Football Championship) is an annual club Gaelic football competition organised by the Mid Cork Board of the Gaelic Athletic Association and contested by junior-ranked teams in the Muskerry region in County Cork, Ireland, deciding the competition winners through a group and knockout format.

Introduced in 1926 as the Mid Cork Junior Football Championship, it was initially a straight knockout tournament.

The competition went through a number of format changes since then, including the introduction of a back-door or second chance for beaten teams.

The all-time record-holders are Canovee, who have won a total of 17 titles.

The most successful team of each decade, judged by number of Mid Cork Junior Football Championship titles, is as follows: Top ten longest gaps between successive championship titles: