The Department of Social Protection (Irish: An Roinn Coimirce Sóisialaí) is a department of the Government of Ireland, tasked with administering Ireland's social welfare system. It oversees the provision of income support and other social services. It is led by the Minister for Social Protection.

The official headquarters and ministerial offices of the department are in Áras Mhic Dhiarmada, Store Street, Dublin. The departmental team consists of the following:

In carrying out its mandate the department undertakes a variety of functions.

The department formulates appropriate social protection policies and administers and manages the delivery of statutory and non-statutory schemes and services. It is responsible for the delivery of a range of social insurance and social assistance schemes including provision for unemployment, illness, maternity, caring, widowhood, retirement and old age. Payments are made to nearly 950,000 people each week with over 1.5 million people directly benefiting from those payments. The budget allocation for 2021 is €25.1 billion. Prior the dissolution of FÁS in 2013, the department took over its employment support functions.

Payments are generally divided into three groups:

The department provides its services through a network of 126 Intreo Centres and Branch Offices throughout the State and, increasingly, through its Mywelfare.ie portal.

Intreo Centres, launched in 2012, were a rebranding of the Social Welfare Offices around the State, updated to reflect the Department of Social Protection's new responsibilities when it brought in some 1,700 staff from FÁS and the HSE's Community Welfare Service.

In August 2019, the Data Protection Commissioner (DPC) found the Department of Social Protection's processing of personal data during the issuing of Public Services Cards (PSC) for use in transactions between a person and a public body other than the department itself to be illegal.