Winter Softball in Ireland includes Fastpitch Softball Leagues Winter Softball Leagues, Intervarsity Softball, Indoor Softball and Softball Business Leagues.
Winter Softball Leagues
The Gemstorm-sponsored Winter League ran from 1999-2000 to 2001-02, with teams named after Big Cats. Trinity College Dublin Tigers and University College Dublin Wildcats joined in 2000-01.

Gemstorm Winter League
The Gemstorm-sponsored Winter League ran from 1999-2000 to 2001-02, with teams named after Big Cats. Trinity College Dublin Tigers and University College Dublin Wildcats joined in 2000-01.