| AB Philea: Sells Scandinavian and other worldwide issues on monthly basis. |
| Abel Stamp Auction: Offers U.S., UN and other worldwide issues and lots. |
| Auction-123: Collectors can buy and sell U.S., European, and other worldwide issues. |
| BidStamp: Allows listing of and bidding on stamps. |
| Black Swan Postal Sales: Sells issues and covers of the British Commonwealth. |
| Cape Stamps: Offers worldwide issues with an emphasis on those of South Africa. |
| Cavendish Auctioneers: Specializes in sales of British Commonwealth and other worldwide issues and lots, plus related literature. |
| Cherrystone Auctions: New York company specializes in postal history, rarities, and other worldwide issues. |
| Corbitts: British firm sells postage issues, plus coins and other collectibles. |
| County Philatelic Auctions: Offers British Commonwealth and other worldwide issues and lots, plus conducts regular sales. |
| D&T International: Specializes in Chinese issues and postal history, plus other Asian issues. |
| Delcampe: Collectors and dealers buy and sell worldwide issues. |
| Downeast Stamps: Sells U.S. issues and postal history, plus worldwide lots. |
| e-Stamp Auctions: Collectors can list and bid on worldwide issues and lots. |
| George Alevizos: Sells lots including worldwide issues and covers. |
| H. J. W. Daugherty: Specializes in U.S. BOB issues and covers, plus related paper materials. |
| Hans Grobe: Specializes in issues and postal history of Germany. |
| Live Stamp Auctions: Allows collectors to sell and bid on worldwide issues and lots. |
| London Stamp Exchange: Specializes in postal history of the British Commonwealth, plus European and South American countries. |
| Matthew Bennett International: Offers worldwide postal history and classics. |
| Negev Holyland Stamps Auctions: Specializes in issues and postal history of Israel and Palestine. |
| Northland Auctions: Deals in Scandinavian, U.S., and other worldwide issues. |
| Northwestern Philatelic Auctions: Publishes six catologues each year featuring issues of Canada and Canadian provinces, plus other British Commonwealth material from around the world. |
| Nutmeg Stamp Sales: Specializes in U.S. postal history and classic issues. |
| Olof Linder Stamp Catalogue: Features singles and sets from Sweden and other Scandinavian countries, plus other worldwide issues. |
| Philangles: Sells mint and used worldwide issues, covers, and lots. |
| Philatelic Friends: Specializes in South African and Rhodesian issues, postal history, and related material. |
| Philatino: Members sell worldwide issues. |
| Prestige Philately: Offers Australian issues and other worldwide lots. |
| Raritan Stamps: Offers worldwide issues and postal history with an emphasis on Russian material. |
| Rasdale Stamp Company: Sells U.S. and worldwide issues and covers. |
| Regency Stamps: Sells worldwide issues and sports memorabilia. |
| Robert A. Siegel: Specializes in U.S. classic issues, covers, and lots. |
| Robert E. Lippert Stamp Auctions: Specializes in U.S. issues and covers, plus other worldwide lots and collectibles. |
| Sandafayre: Covers British Commonwealth and other worldwide issues and lots. |
| Schuyler Rumsey Philatelic Auctions: Sells U.S. covers and issues, plus British Commonwealth and other worldwide material. |
| Southampton Philatelic Auctions: Features issues of Great Britain and the British Commonwealth, plus other worldwide material. |
| Stamp Auction Network: Multiple dealers sell worldwide issues and lots. |
| Stamp Auctions: Sells various worldwide lots. |
| Stamp Head Auctions: Allows collectors to buy and sell postal material and supplies. |
| Stamp Wants: Dealers and collectors can buy and sell U.S. and worldwide issues. |
| StampOffers.com: Allows collectors to buy and sell lots. |
| Stamps 4 Collectors: Offers worldwide lots. |
| Stamps by Themes: Specializes in French, Hungarian, and North Korean imperforates and other worldwide thematic issues. |
| Stamps-pl: Specializes in sales of Polish issues. |
| Status International: Sells Australian issues and other worldwide lots. |
| Tel-Aviv Stamps: Specializes in Israeli and Palestinian issues. |
| Treasure-Hunters Limited: Specializes in issues of China and other Asian countries. |
| Unistamps: Features issues and postal history of Europe, the British Commonwealth, and other worldwide nations. |
| Vance Auctions: Offers Canadian and British Commonwealth issues and other worldwide lots. |
Classical
