Abbozzo

Abject art

Abrasion

Absentee Bid

Abstract art

Abstract expressionism

Abstract illusionism

Academic art

Académie Colarossi

Accretion

Action painting

Aestheticism, Estheticism

Afrapix

Albumen print

Alla prima

Alligatoring

Altermodern

Amarna art

American realism

Analogue colours

Anglo-Japanese Style

Aniconism

Antipodeans

Antiquarianism

Antwerp Mannerism

Appraisal, art appraisal

Arabesque

Arbeitsrat für kunst

Archival art stock

Armature in sculpture

art auctioneer

Art autre

Art deco

Art falsification

Art informel

Art movement

Art Nouveau

Arte Madí

Arte Povera

Artist colony or art colony

Artist's proof

Assemblage

Assemblage art

Atramentum

Auction estimate

Aureolin

Authorship