A number of other Flag Football Competitions have taken place in Ireland besides the Irish Flag Football League & Blitzes, and International Competitons.
The most prominent of these would be the Junior Flag Football & Two-Touch Football (prior to Ireland getting Flags from America, teams had to rely on a system whereby the ball carrier was ‘tackled’ if he was touched with two hands.
There has also been College / University and Schools Flag Football Tournaments, and Indoor Flag Football Tournaments (the rules differ due to the walls of the Indoor Hall impinging on play).

[2] Brendan Moran, Sportsfile (2018) NFL UK Flag Football Tournament 22 March 2018 [Internet] Available from: https://www.sportsfile.com/winshare/w540/Library/SF1020/1470556.jpg [Accessed 4 May 2020][Adjusted]
Indoor Flag Football (2014)
IAFA Indoor Flag Football Tournaments (2014): 2014
Irish Schools Flag Football (2011-2018)
NFL UK Schools Flag Football Tournament (Seasons): 2018
IAFA / Sky Sports Schools Flag Football Programme (Seasons): 2015 2014
IAFA | Schools Flag Football Tournaments:
Irish American Football Association | Schools Flag Football Finals 2011-2013
IAFA / Women in Sport Schools Flag football Tournaments (Seasons): 2012
Irish Youth and Community Flag Football (1986-2006)
National Football League Flag Football League Knocknaheeny Cork 2006
Options Unlimited Junior Flag Football, Basketball and Baseball, Ballybrack and Loughlinstown 1986

[1] Wikipedia (2020) CUSAI Logo [Internet] Available from: https://upload.wikimedia.org/wikipedia/en/thumb/1/18/CUSAI-Logo-Only.jpg/220px-CUSAI-Logo-Only.jpg [Accessed 12 April 2020]
Colleges Flag Football (1993-Present)
CUSAI Flag Football College Championship (Seasons): 2009-10
Irish Flag Football Summer Bowl Blitzes (Bowls & Finals):
In addition to the Northern Ireland American Football Association Flag Football League (1985 to 1986) and the Irish Flag Football League (Greater Dublin Area) which started in 1991-92, there have been a number of Summer Bowls and Summer Leagues which have been run by various regional development bodies such as the Jack Daniels Summer Bowl, held in aid of Third World charities, the Irish Collegiate American Football Association Summer Bowl (1993-1994) and the Irish Flag Football Association Summer League (1995-1997).
Irish Flag Football Association | Summer League Finals 1995-1997
Irish Collegiate American Football Association | Summer Bowl 1993-1994
Jack Daniels Summer Bowl International Flag Football Challenge 1986-1992
ICAFA Summer Bowl: 1993

Irish Flag Football Association Logo
[1] Irish American Football League (2005) 2005 Thanksgiving Flag Football Tournament [Internet] Available from: http://americanfootball.ie/iafl/flagnov05.htm [Accessed 25 October 2016]
Irish Junior Flag Football (2005-2006)
IFFA Junior League: 2005-06
NFL Kickoff Flag Football Tournament (Seasons): 2004
Junior Two-Touch American Football (1986-1991)
From 1986 to 1991, before Flags were brought in, there were a number of Junior Two-Touch Leagues organised by regional development bodies, such as the East Coast Junior Football Association (Greater Dublin Area) from 1986 to 1987, and the Northern Ireland Junior American League which ran from 1988 to 1990, when it became fully kitted. In 1991, a Junior Two-Touch American Football Blitz took place in Tymon Park, Tallaght.
ICAF Junior Touch American Football Blitz (Seasons): 1991
Northern Ireland Junior American League (Seasons): 1990 1988
East Coast Junior Football Association (Seasons): 1987 1986
Northern Ireland Junior American League (Preseasons): 1990