Di or DI may refer to:
In computing, a Digital Object Identifier or DOI is a persistent identifier or handle used to uniquely identify objects, standardized by the ISO.
Diana, Princess of Wales (Diana Frances; née Spencer; 1 July 1961 – 31 August 1997), was the first wife of Charles, Prince of Wales, who is the eldest child and heir apparent of Queen Elizabeth II.
Dissociative identity disorder (DID), previously known as multiple personality disorder (MPD), is a mental disorder characterized by at least two distinct and relatively enduring identities or dissociated personality states that alternately show in a person's behavior, accompanied by memory impairment for important information not explained by ordinary forgetfulness.
Diabetes mellitus (DM), commonly referred to as diabetes, is a group of metabolic diseases in which there are high blood sugar levels over a prolonged period.
On the evening of 3 May 2007, Madeleine Beth McCann (born 12 May 2003), a 3-year-old English girl, disappeared from her bed in a holiday apartment in Praia da Luz, a resort in the Algarve region of Portugal.
Diazepam, first marketed as Valium, is a medication of the benzodiazepine family that typically produces a calming effect.
Dinosaurs are a diverse group of reptiles of the clade Dinosauria that first appeared during the Triassic.
Dionysus (/daɪ.əˈnaɪsəs/; Greek: Διόνυσος, Dionysos) is the god of the grape harvest, winemaking and wine, of ritual madness, fertility, theatre and religious ecstasy in ancient Greek religion and myth.
Diarrhea, also spelled diarrhoea, is the condition of having at least three loose or liquid bowel movements each day.