Peggy Gish has been working in Iraq with Christian Peacemaker Teams since October 2002, and was in Iraq before, during, and after the 2003 war. Gish is a grandmother, farmer, community mediator, conflict management trainer, and former co-director of the Appalachian Peace and Justice Network in Athens, Ohio. Her book Iraq: a Journey of Hope and Peace (Herald Press, 2004) tells the story of her experiences and CPT's work in Iraq.

Gish is a member of New Covenant Fellowship, a Christian communal farm near Athens, Ohio.