'''Quadra''' may refer to:
* Quadra, São Paulo, a municipality in Brazil * Quadra Island, British Columbia, Canada * Vancouver Quadra, a federal electoral district in British Columbia, Canada * {{HMCS|Quadra}}, a Royal Canadian Navy cadet training center in Comox, British Columbia * Macintosh Quadra, a line of computers made by Apple Computer * ARP Quadra, a paraphonic analog synthesizer produced by ARP Instruments * Quadra, Telecine introduced by Broadcast Television Systems Inc. in 1993 * Quadra, a group of four psychological types in the theory of socionics * ''Quadra'' (album), by Brazilian heavy metal band Sepultura * Quadra Blu, a character from Max Rep comics by illustrator Lyman Dally * The fighting style of several characters in the anime manga and light novel ''Aria the Scarlet Ammo'' * Quadra, a genus of flies described in 1929
==See also== * Álvaro de la Quadra (d.1564), Spanish Ambassador to England during the reign of Queen Elizabeth of England * Juan Francisco de la Bodega y Quadra (1743–1794), Spanish explorer * Quadra's and Vancouver's Island, the original name of Vancouver Island * Hostius Quadra, an ancient Roman man described in Seneca's Natural Questions * Cuadra, a surname
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