A7, A.7, A 7, A07 or A-7 may refer to:

• A⁷, the A dominant seventh chord used in many rock songs, see dominant seventh chord
• A (musical note)
• A7 (mixtape), by SCH, 2015
• Avenged Sevenfold, a hard rock/metal band

• Arutz Sheva, an Israeli radio station meaning Channel Seven

• A7, a type of stereoautograph
• Altec Lansing A-7, a speaker
• Apple A7, a system on a chip used first in the iPhone 5S
• ARM Cortex-A7, a processor in the ARM Cortex-A processor family
• Samsung Galaxy A7, a smartphone
• Sony α7, a family of full-frame mirrorless interchangeable-lens cameras.

• A-7 (transceiver), a Soviet VHF radio transceiver developed during World War II
• Skoda 37 mm A7, a tank gun produced before and during World War II by the Skoda Works

• A7 (Artillery Regiment)
• A7, the military staff designation in the continental staff system for air force headquarters staff concerned with military training

• A7, a model of German Aggregate Series Rocket from World War II
• A-7 Corsair II, a Ling-Temco-Vought single engine jet attack aircraft
• Antonov A-7, a World War II Soviet assault glider
• Breda A.7, a 1929 Italian reconnaissance aircraft
• Focke-Wulf A 7, a World War I German aircraft
• Hall-Scott A-7, an early aircraft engine
• HMS A7, an A-class submarine of the Royal Navy
• USS Shark (SS-8), a.k.a. USS A-7, a Plunger-class submarine of the United States Navy

• ATC code A07 Antidiarrheals, intestinal anti-inflammatory/anti-infective agents, a subgroup of the Anatomical Therapeutic Chemical Classification System
• British NVC community A7 (Nymphaea alba community), a British Isles plant community
• Noradrenergic cell group A7
• Subfamily A7, a Rhodopsin-like receptors subfamily

• A7 (classification), an amputee sport classification
• A type of Réti Opening code for Chess (A07)

• Autobacs Seven, a Japanese sports car manufacturer
• Arrows A7, a British racing car
• Audi A7, a German mid-size coupe

• A7 road, in several countries
• Route A7 (WMATA), a bus route operated by the Washington Metropolitan Area Transit Authority

• LNER Class A7, a class of British 4-6-2T steam locomotives

• Air Comet, its IATA airline designator
• The aircraft registration code prefix for Qatar

• A7, an ISO 216, international standard paper size, 74×105 mm
• A7 (bar), bar in New York City
• Sako A7, a Finnish bolt-action rifle

• Alpha 7 (disambiguation) (α7 / Α7)
• 7A (disambiguation)