The 1939 All-Ireland Minor Football Championship was the 11th staging of the All-Ireland Minor Football Championship, the Gaelic Athletic Association's premier inter-county Gaelic football tournament for boys under the age of 18.
Cavan entered the championship as defending champions, however, they were defeated by Monaghan in a replay of the Ulster final.
On 24 September 1939, Roscommon won the championship following a 1-9 to 1-7 defeat of Monaghan in the All-Ireland final.
This was their first All-Ireland title.
[1] Semi-finals Final