Di or DI may refer to:
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.
Tubulin inhibitors are drugs that interfere directly with the tubulin system, which is in contrast to those drugs acting on DNA for cancer chemotherapy.
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.
A digital object identifier (DOI) is a type of persistent identifier used to uniquely identify objects.
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.
Diazepam, first marketed as Valium, is a medication of the benzodiazepine family that typically produces a calming effect.
Discos Qualiton was a record label, published by the extinct recording studio Fonema S.A. A garage experiment born in Rosario, Argentina in 1961, Qualiton would later become a major independent project influencing a generation of artists, writers, musicians, poets and filmmakers.
Dinosaurs are a diverse group of animals of the clade Dinosauria that first appeared during the Triassic period.
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.