Cathy Breen has long supported or been a member of these organizations:

Portland Trails

Falmouth Land Trust

Falmouth Education Foundation

Congregation Bet Ha’am

SAFE Maine

EMILY’S List

Maine Women’s Lobby

Jewish Community Alliance

NAMI Maine

Brain & Behavior Research Foundation

Spurwink Services

Maine Public Broadcasting Network

Good Shepard Food Bank

Planned Parenthood

Cultivating Community

Goodwill Industries

Institute for Civic Leadership

Royal River Conservation Trust