The 1951 All-Ireland Minor Football Championship was the 20th 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.
Kerry entered the championship as defending champions, however, they were defeated by Armagh in the All-Ireland semi-final.
On 23 September 1951, Roscommon won the championship following a 2-7 to 1-5 defeat of Armagh in the All-Ireland final. This was their third All-Ireland title overall and their first in seven championship seasons.
(Roscommon awarded title after objection)
Quarter-final
Mayo 1-4 Sligo 0-5 Ballymote.
Semi-finals
Roscommon 3-5 Mayo 0-2
Galway 2-8 Leitrim 2-5
Final
Final
Final
(Armagh/Kerry went to a replay)
(Croke Park, Dublin)