- 1/3 running bond
- 1/4 plate
- 1 over 1
- 1/2 pitch
- 2 over 2
- 4 over 6
- 4 over 4
- 6 over 9
- 6 over 6
- 12 over 12
- A bulb
- a.c.
- a cordoni
- A-frame
- a giorno
- A-grade
- a jour
- a la Grecque
- Aaron's rod
- abaciscus
- abaculus
- abacus
- abamurus
- abat-jour
- abat-sons
- abat-vent
- abat-voix
- abate
- abated
- abatjour
- abaton
- abattoir
- abatvent
- abatvoix
- abbadia
- abbatial
- abbazzo
- abbey
- abbeystead
- abbeystede
- abbreuvoir
- Aberdeen bond
- ablaq
- aboriginal American architecture
- aboudikro
- abram's law
- abrasion resistance
- abrasion-resistance index
- abraum
- abreuvoir
- abrevoir
- absidiole
- absis
- Absolute architecture
- absorbing well
- absorpotion
- absorption
- abstract expressionism
- Abstract Representation
- abura
- abut
- abutment
- abutment-piece
- abuttal
- Abyssinia architecture
- Abyssinian well
- acacia
- Academic Movement
- academy
- academy of architecture
- acaina
- acajou
- acanthine
- acanthus
- acanthus leaf
- acanthus leaves
- Accadian
- Accadian architecture
- accelerated aging
- accelerated weathering
- accelerator
- access door
- access flooring system
- accessories
- acclimatize
- accolade
- accompaniment
- accordion door
- accordion window
- accouplement
- accra
- aceitillo
- Achaemenian
- Achaemenid
- Achaemenid architecture
- achech
- achelor
- achievement
- Achievement of Arms
- achiler
- achromatic
- acle
- acorn
- acoustic decking
- acoustic resonators
- acoustic tile
- acoustic vase
- acoustical ceiling
- acoustical door
- acoustical glass
- acoustical plaster
- acoustical tile
- acoustics
- acoustometer
- Acqua Claudia
- acque vola
- acre
- acroaterion
- acrobaticon
- acrolith
- acrolithus
- acropodium
- acropolis
- acrostolium
- acroter
- acroteral
- acroteria
- acroterial
- acroterion
- acroterium
- acrylic
- acrylic resin
- acrylonitrile-butadiene-styrene
- act curtain
- act drop
- actinic glass
- actinic ray
- Action architecture
- active earth pressure
- active leaf
- actus
- acuminated
- acute arch
- Adam
- Adam style
- Adamesque
- Adamesque Federalist
- adaptation
- adaptive reuse
- additive
- additive color
- additive composition
- additive plan
- additus maximum
- addorsed
- adhered veneer
- Adhocism
- Adirondack
- Adirondack sandstone
- Adirondack style
- adit
- aditus
- adjustable doorframe
- adjustable tie
- admixture
- adobe
- adobe brick
- adobe brick with plaster finish
- adobe bricks
- adobe clay
- adobe concrete
- adobe earth
- adobe mortar
- adobe mud
- adobe plaster
- adobe soil
- adobes
- adorsed
- adsoprtion
- advanced work
- advancing color
- advice-stane
- adyton
- adytum
- adz
- aedes
- aedicula
- aedicula window
- aedicule
- aedile
- aedility
- aedis
- AEG Turbine Factory
- aegicrames
- aegicrane
- aegicranes
- aegicranium
- Aeginetan Marbles
- aenum
- Aeolic
- aerarium
- aerated concrete
- aereosystyle
- aerial perspective
- aerodrome
- aerugo
- aes
- Aesthetic Movement
- Aesymnium
- aethousa
- aetiaioi
- aetoma
- aetos
- afara
- affleure
- affronte
- affronted
- afhus
- afong
- African blackwood
- African cedar
- African cherry
- African mahogany
- African padauk
- African rosewood
- African walnut
- agalma
- agba
- agger
- agger murorum
- agger viae
- agglutinative
- aggregate
- agiasterium
- agnus
- agnus dei
- agora
- agrafe
- agraffe
- Agricultural Order
- aguglia
- aguilla
- agyieus
- AIA
- aileron
- ailure
- aip-house
- air brick
- air-brick
- air chamber
- air conditioning
- air drain
- air-dried
- air duct
- air-entraining agent
- air-entraining portland cement
- air pipe
- air rights
- air shaft
- air space
- air trap
- air trunk
- air wood
- airhole
- airlock
- airplane bungalow
- airway
- aislar
- aisle
- aisled
- aisles
- aiwan
- ajaraca
- ajarcara
- ajimez
- ajour
- ajoure
- ajutage
- akaina
- Akkadian
- Akropolis
- ala
- Alabama marble
- alabaster
- alabastrites
- alameda
- alarm
- alaryne
- Alaska yellow cedar
- alatoria
- alatorium
- albanega
- albani stone
- albarium
- albarium opus
- albarius
- Alberene
- albronze
- album
- alburnum
- alcala
- alcantara
- alcazaba
- Alcázar
- alclad
- alcoran
- alcove
- alder
- ale house
- aleaceria
- aleatorium
- alectorium
- aleipterion
- aleois
- alerce
- alerin
- alette
- Alexandrian work
- Alexandrine
- Alexandrinum opus
- alfarje
- alfiz
- alhacena
- Alhambra
- alhambresque
- alhauna
- alicatado
- alidade
- alien house
- alien priory
- aliform
- align
- alignment
- aligreek
- alinda
- alinement
- alipterion
- alipterium
- alkoran
- alkoranes
- alkyd paint
- alkyd resin
- alla prima
- all'antica
- allée
- allege
- allegorical motif
- allegory
- allering
- alleringe
- alley
- allieny
- alligator pear
- allover
- allowable bearing capacity
- allowable bearing pressure
- allowable pile load
- allowable soil pressure
- allowable stress
- allowable unit stress
- alloy
- alloy steel
- allure
- almariol
- almariolum
- almary
- almehrabh
- almemar
- almemor
- almena
- almerie
- almery
- almimbar
- almique
- almocarabe
- almon
- almond
- almonry
- almorie
- almorrefa
- almory
- alms box
- alms chest
- alms gate
- almshouse
- aloring
- alorium
- alorying
- aloryng
- alourde
- alpha-beta brass
- Alps Green
- alrine
- alring
- alryne
- altana
- altar
- altar board
- altar cavity
- altar desk
- altar facing
- altar front
- altar frontal
- altar herse
- altar ledge
- altar mound
- altar of repose
- altar rail
- altar screen
- altar side
- altar slab
- altar stairs
- altar step
- altar stone
- altar table
- altar-tomb
- altar tomb
- altarpiece
- altarscreen
- altarstead
- alteration
- alternate system
- alternate tracery
- alternating current
- alternating system
- alternative architecture
- Altis
- alto-relievo
- alto-rilievo
- alumina
- aluminium
- aluminum
- aluminum brass
- aluminum bronze
- aluminum grille
- aluminum oxide
- aluminum siding
- alura
- alure
- alury
- alveated
- alvus
- amadah
- amado
- amalaka
- amalasari
- amaranth
- ambe
- ambi
- ambitus
- ambivium
- ambo
- ambon
- ambones
- amboyna burl
- ambre
- ambrices
- ambry
- ambulacrum
- ambulatio
- ambulatory
- ambulatory church
- ambury
- amenity
- Amenopheium
- Amer-Indian architecture
- American black walnut
- American bond
- American common bond
- American Directory
- American ebony
- American elm
- American Foursquare
- American Order
- American plane
- American Renaissance
- American standard beam
- American standard channel
- American style
- American sycamore
- Americans with Disabilities Act
- Amerind architecture
- Amherst sandstone
- Ammonite Order
- ammortizement
- amorini
- amorino
- amorphous
- amortissement
- amortizement
- ampere
- amphi-antis
- amphidistyle-in-antis
- amphiprostyle
- amphirostylos
- amphistylar
- amphithalamos
- amphithalamus
- amphitheater
- amphitheatre