The 2015 FBD Insurance League was an inter-county and colleges Gaelic football competition in the province of Connacht.
As well as the five county teams, three colleges' teams competed: Institute of Technology, Sligo, NUI Galway and Galway-Mayo Institute of Technology (GMIT).
Each team plays the other teams in its group once, earning 2 points for a win and 1 for a draw.
The two group winners play in the final.
Roscommon are placed ahead of Mayo as they won the head-to-head game between the teams.