The League of Municipalities of the Philippines is an organization of all municipalities in the Philippines which was created by virtue of Section 496 of Republic Act 7160, otherwise known as the Local Government Code of 1991. The LMP is legally mandated to organize for the primary purpose of ventilating, articulating and crystallizing issues affecting municipal government administration, and securing, through proper and legal means, solutions thereto.

Section 498 of the Local Government Code of 1991 outlines the following powers, functions, and duties of the League:

• Assist the national government in the formulation and implementation of the policies, programs, and projects affecting municipalities as a whole;
• Promote local autonomy at the municipal level;
• Adopt measures for the promotion of the welfare of all municipalities and its officials and employees;
• Encourage people’s participation in local government administration in order to promote united and concerted action for the attainment of country-wide development goals;
• Supplement the efforts of the national government in creating opportunities for gainful employment within the municipalities;
• Give priority to programs designed for the total development of the municipalities in consonance with the policies, programs, and projects of the national government;
• Serve as a forum for crystallizing and expressing ideas, seeking the necessary assistance of the national government, and providing the private sector avenues for cooperation in the promotion of the welfare of the municipalities; and
• Exercise such other powers and perform such other duties and functions as the League may prescribe for the welfare of the municipalities.