EQ may refer to:
Equatorial Guinea (Spanish: Guinea Ecuatorial, French: Guinée équatoriale, Portuguese: Guiné Equatorial), officially the Republic of Equatorial Guinea (Spanish: República de Guinea Ecuatorial, French: République de Guinée équatoriale, Portuguese: República da Guiné Equatorial), is a country located in Central Africa, with an area of 28,000 square kilometres (11,000 sq mi).
An equal temperament is a musical temperament, or a system of tuning, in which the frequency interval between every pair of adjacent notes has the same ratio (rather than the same absolute change in frequency).
The equals sign or equality sign (=) is a mathematical symbol used to indicate equality. It was invented in 1557 by Robert Recorde.
This is a list of some of the modern and historical equipment used by the Indian Army. Most of the army equipment is of foreign design and produced under licence in India but efforts are on to progressively design and manufacture equipment locally.
In physics and thermodynamics, an equation of state is a thermodynamic equation relating state variables which describes the state of matter under a given set of physical conditions.
Equine anatomy refers to the gross and microscopic anatomy of horses and other equids, including donkeys, and zebras.