The ACT Council of Social Service Inc (ACTCOSS) is the peak representative body for not-for-profit community organisations, and disadvantaged and low-income citizens of the Australian Capital Territory.

ACTCOSS has the twin roles of representation and advocacy. The ACTCOSS's principle objectives are:
the representation of disadvantaged people; the promotion of equitable social policy; and; the development of a well-resourced, cohesive and sustainable community sector. ACTCOSS is a membership based organisation whose membership is drawn from the community Services sector, advocacy and self help groups, and committed individuals.

Key social policy areas that ACTCOSS examines include housing and homelessness, mental health, disability services, health, employment and economic policy, corrections, gambling, community sector workforce issues, consumer rights and complaints bodies.

The ACT Council of Social Service was formed in 1963. ACTCOSS is a member of the nationwide COSS network, made up of each of the state Council's and the national body, the Australian Council of Social Service (ACOSS).

ACTCOSS Constitution
ACTCOSS 2006-2008 Strategic Plan
ACTCOSS Annual Report 2006-07