Ilo, ILO or variations may refer to:

Places Ilo Province, one of three provinces that make up the Moquegua Region in Peru Ilo District Ilo, Peru, a port in southern Peru Lake Ilo, a man-made lake in Lake Ilo National Wildlife Refuge, North Dakota, United States

Organizations iLo Technologies, a Walmart consumer electronics house brand ILO-Motorenwerke, a former German manufacturer of two-stroke engines International Labour Organization, a specialized agency of the United Nations that deals with labour issues International Left Opposition, an opposition group within the Comintern

People Dhimitër Ilo (1862–1947), one of the signatories of the Albanian Declaration of Independence Miikka Ilo (born 1982), Finnish footballer Spiridon Ilo (1876–1950), one of the founding fathers of Albania Ilo Wallace (1889–1981), wife of Henry A. Wallace, the 33rd Vice President of the United States

Other uses Alternative name for Ido, a constructed language HP Integrated Lights-Out (iLO), the management processor used on most Hewlett-Packard ProLiant servers Iloilo International Airport's IATA code Injection-locked oscillator, a type of oscillator used in LC circuits International Linguistics Olympiad, part of International Science Olympiads ISO 639-2 and ISO 639-3 code for Ilokano language, spoken in the Philippines

See also Ylo (disambiguation)