The 1998–99 All-Ireland Senior Club Football Championship was the 29th staging of the All-Ireland Senior Club Football Championship since its establishment by the Gaelic Athletic Association in 1970-71.

The championship began on 4 October 1998 and ended on 17 March 1999.

Corofin entered the championship as the defending champions, however, they were beaten by Ballina Stephenites in the Ulster Club Championship.

[1] On 17 March 1999, Crossmaglen Rangers won the championship following a 0-09 to 0-08 defeat of Ballina Stephenites in the All-Ireland final at Croke Park.

[3] Crossmaglen's Oisín McConville was the championship's top scorer with 1-31.