Artstor (I)
Artstor is a nonprofit digital library of more than one million images in the arts, architecture, humanities, and social sciences with a suite of software tools to view, present, and manage images for research and pedagogical purposes.

Bridgeman Images (I)
Images from over 8,000 collections and more than 29,000 artists . Fine art , design, antiques, maps, architecture, furniture, glass, ceramics, anthropological artifacts and many others are featured.

Getty Research Institute Photo Archive (I)
The Photo Archive's two million photographs facilitate supplementary and original pictorial research for the study of fine arts from antiquity to the modern period.

Grove Art Online (via Oxford Art Online) (I)
Scholarly art encyclopedia covering all aspects of Western and non-Western visual art. It includes the full text of The Dictionary of Art and over 5,000 searchable and embedded art images, maps, and line drawings. The resource also provides over 40,000 editorially selected image links to museums and galleries around the world.

Index of Medieval Art (I)
The Index records works of art produced without geographical limitations from early apostolic times up to ca. A.D. 1550.

WorldImages Database
The internationally recognized WorldImages database provides access to the California State University IMAGE Project. It contains almost 75,000 images, is global in coverage and includes all areas of visual imagery.

Biblioteca Ambrosiana Inventory - Catalogue of the Drawings (@ University of Notre Dame) (I)

Art Resource (I)

Artcyclopedia (I)

ArtServe (I)

Artstor (I)

Bildarchiv Foto Marburg (I)

Bridgeman Images (I)

Calisphere (UC Libraries / California Digital Libraries

Charles Rhyne Photographs of the Getty Center

College Art Association: U.S. and International Image Banks (includes free and unrestricted images)

Corbis Images

Emblematica Online

eMuseum Network (over 61 institutions, over 1.7 million objects)

Frick Art Reference Library's Photoarchive

Great Buildings Collection

Google Images Internet search engine

Flickr: The Commons

Galaxy of Images - Smithsonian Institution Libraries

Getty Images, Inc. (I)

Grove Art Online (via Oxford Art Online)

Index of Medieval Art

International Center of Photography

Last Statues of Antiquity

Library of Congress Digital Collections

Life Photo Archive hosted by Google

Manar Al-Athar (I)

OpenGLAM: Public Domain Collections

Photomuse, The Museum of Photography in India

Print Council of America

Archivio Fotografico Scala

Scholars Resource (I)

Vogue Archive

World Digital Library

Web Gallery of Art

WorldImages Database (I)

Asian Art Museum, San Francisco

Autry National Center

Fowler Museum

Hammer Museum

J. Paul Getty Museum

Los Angeles County Museum of Art (LACMA) Collections Online

The Museum of Contemporary Art, Los Angeles (MOCA)

Norton Simon Museum

Santa Barbara Museum of Art

Timken Museum of Art, San Diego

UC Santa Barbara, University Art Museum, Architecture and Design Collection

The Art Institute of Chicago

Canadian Centre for Architecture

Cleveland Museum of Art

The Detroit Institute of Arts

The Frick Collection

Guggenheim Museum Collections

Metropolitan Museum of Art

Museum of Fine Arts, Boston

The Museum of Fine Arts, Houston

Museum of Modern Art, New York (NYC)

National Gallery of Art, Washington DC

National Gallery of Canada

New York Art Resources Consortium (Arcade)

Smithsonian Museums

British Library Images Online

The British Library Online Gallery

The British Museum

The National Galleries of Scotland

The National Gallery, London

Victoria and Albert Museum

French Museums

Musée du Louvre

Museums in Russia (Official List)

Museum of Cycladic Art

Staatliche Museen zu Berlin

Uffizi Gallery

Discover Islamic Art (Museum with no Frontiers) (Other)

ICOM Museums

Kyoto National Museum Masterworks Database (Other)

Digital Collections

Photo Archive