Gallagher
family name on television show Shameless, consisting of Frank, Fiona, Philip (Lip), Ian, Debbie, Carl, and Liam Gallagher
Gallagher & Lyle
Scottish musical duo consisting of Benny Gallagher and Graham Lyle
Gallagher & Shean
vaudeville act consisting of Edward Gallagher and Al Shean
Mary Katherine Gallagher
character on TV's Saturday Night Live played by Molly Shannon