- Jackets Retail, Seattle
- Jacks & Jacks Repair & Service, Seattle
- Japanese Food Products, Seattle
- Japanese Restaurants, Seattle
- Jazz Club Restaurants, Seattle
- Jehovah Witness Church, Seattle
- Jet Propelled Watercraft, Seattle
- Jewelers Supplies & Findings, Seattle
- Jewelry & Jewelers Equipment & Supplies, Seattle
- Jewelry & Precious Metal Manufacturers, Seattle
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- Jewelry Appraisers, Seattle
- Jewelry Brokers, Seattle
- Jewelry Buyers & Brokers, Seattle
- Jewelry Stores, Seattle - Jewelers
- Jewish Practitioners, Seattle
- Jewish Synagogues, Seattle
- Job Corps, Seattle
- Judaic Churches, Seattle
- Juke Box Dealers & Services, Seattle
- Justice Courts, Seattle
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