- 20th Century
 - Paddington - Art deco, modernist, and 1940s furniture, lighting, and decorative arts. - Antiques On Line
- Lane Cove - Specialist service that will find the kind of antiques or collectables that you are interested in for you if they exist in the Sydney region.
- Art of Wine & Food
- Woollahra - Deals in food and wine-related antiquities.
- Authentics.com.au
- Sydney - Offers products signed by NRL, AFL, and baseball players, as well as actors and musicians.
- Country Trader, The
- Paddington - Specialises in 17 to 19th Century French provincial antiques, garden and architectural elements, and decorative items.
- Flash Trash
- Camperdown - Antiques, homewares, and recycled architectural structures.
- Meyer's Secondhand and Antiques
- Seaforth - Buys and sells all types of pre-loved items. Site features items and contact information.
- Off The Rails Collectables
- Camperdown - Railway and maritime antiques and memorabilia.
- Post Age
- Crows Nest - Produces collectable tin postcards, puzzles, boxes, and posters using nostalgic Australian posters and advertising.
- Southern Antique Centre
- Kogarah - Outlines the buying and selling philosophy, has a wish list location services for hard to find items, and operates a barn cafe.
- Status International
- Sydney - Specialist auctioneers of stamps, covers, coins, banknotes, and medals.
- Sydney Antique Centre
- Surry Hills - Housing more than 50 antique dealers.
- Tin Box Company of Australia
- Crows Nest - Produces tin packaging.
- Victory Theatre Antique Centre
- Blackheath - Housing 30 stalls of antiques.
- Xanthos
- Glebe - Antiquities from around the world.
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