OL may refer to:
The modern Olympic Games or Olympics (French: Jeux olympiques) are leading international sporting events featuring summer and winter sports competitions in which thousands of athletes from around the world participate in a variety of competitions.
An organic light-emitting diode (OLED) is a light-emitting diode (LED) in which the emissive electroluminescent layer is a film of organic compound that emits light in response to an electric current.
Oliver Cromwell (25 April 1599 – 3 September 1658) was an English military and political leader and later Lord Protector of the Commonwealth of England, Scotland, and Ireland.
Old Norse was a North Germanic language that was spoken by inhabitants of Scandinavia and inhabitants of their overseas settlements during about the 9th to 13th centuries.
Olivia Mary de Havilland (born July 1, 1916) is a retired American actress whose career spanned from 1935 to 1990. She appeared in 49 feature films, and was one of the leading movie stars during the golden age of Classical Hollywood.
The olive, known by the botanical name Olea europaea, meaning "European olive", is a species of small tree in the family Oleaceae, found in the Mediterranean Basin from Portugal to the Levant, the Arabian Peninsula, and southern Asia as far east as China, as well as the Canary Islands, Mauritius and Réunion.
Olanzapine (originally branded Zyprexa) is an atypical antipsychotic. It is approved by the U.S. Food and Drug Administration (FDA) for the treatment of schizophrenia and bipolar disorder.
Old English (Ænglisc, Anglisc, Englisc) or Anglo-Saxon is the earliest historical form of the English language, spoken in England and southern and eastern Scotland in the early Middle Ages.
Old age refers to ages nearing or surpassing the life expectancy of human beings, and is thus the end of the human life cycle.