| Competition: | Armagh SFC |
| Season: | 2017 |
| Winners: | Armagh Harps (21st title) |
| Relegated: | Wolfe Tones (7th in the SBFL) Culloville Blues (8th in the SBFL) |
| Continentalcup5: | Ulster SCFC |
| Continentalcup5 Qualifiers: | ??? |
| Continentalcup1: | All Ireland SCFC |
| Continentalcup4: | Winning Manager |
| Continentalcup4 Qualifiers: | John Toner |
| Continentalcup2: | Winning Captain |
| Continentalcup2 Qualifiers: | Conor White |
| Continentalcup3: | Man Of The Match |
| Continentalcup3 Qualifiers: | Ultan Lennon |
| Prevseason: | 2016 |
| Nextseason: | 2018 |
The 2017 Armagh Senior Football Championship is the 117th official edition of Armagh GAA's premier gaelic football competition for senior clubs and was won by Armagh Harps. The tournament consisted of 16 teams with the winner, Armagh Harps receiving the Gerry Fegan Cup and representing Armagh in the Ulster Senior Club Football Championship.
The championship has a backdoor format for the first two rounds where any team to lose two matches will be eliminated before proceeding to a knock-out format.
Maghery Seán McDermott's were the defending champions after they defeated St. Patrick's Cullyhanna in the 2016 final.
This was Culloville Blues and Whitecross' return to the senior grade after they claimed the 2016 I.A.F.L. and I.F.C. titles respectively.
Wolfe Tones and Culloville Blues are relegated to the I.F.C. and I.A.F.L. for 2018 after they finished 7th and 8th in the S.B.F.L. respectively. They will be replaced by the I.F.C. champions Killeavy St Moninna's as well as the I.A.F.L. champions Silverbridge Harps.
All 16 teams play in this round. The 8 winners progress to Round 2A while the 8 losers progress to Round 2B.
The 8 winners from Round 1 enter this round. The 4 winners enter the draw for the quarter-finals while the 4 losers play in Round 3.
The 8 losers from Round 1 enter this round. The 4 winners advance to Round 3 while the 4 losers exit the Championship.
The 4 losers from Round 2A (who won a match and lost a match) play the 4 winners from Round 2B (who lost a match and won a match). The 4 winners qualify for the quarter-finals.
The four winners from Round 2A play the four winners from Round 3. The 4 winners advance to the semi-finals.
See main article: 2017–18 All-Ireland Senior Club Football Championship.