Maynilad Water Services, Inc., better known as Maynilad, is the water and wastewater services provider of cities and municipalities that form the West Zone of the Greater Manila Area in the Philippines. It is an agent and contractor of the Metropolitan Waterworks and Sewerage System (MWSS). Maynilad is one of two private water providers in Metro Manila, the other being Manila Water.

The Metropolitan Waterworks and Sewerage System, formerly known as the National Waterworks and Sewerage System Authority (NAWASA), is the government agency that is in charge of water privatization in Metro Manila and nearby provinces of Cavite and Rizal in the Philippines. It split the water concession into an east and a west concession with Manila Water being awarded one contract and Maynilad Water Services being awarded the other.