- Y2K Solutions Group, Inc. (1)
- YMCA of Greater New York (35)
- YMCA of Greater New York. (33)
- YMCA of Greater New York. Brooklyn Central Branch. (2)
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- YMCA of Greater New York. Uptown Branch (15)
- YMCA of the USA (2387)
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- YMCA of the USA. International Division. (1671)
- YWCA of Minneapolis (4)
- Ya, Ahmay (1)
- Yaeger, Rob (1)
- Yager Nursery & Seed Co. (1)
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- Yamaguchi, Chieko (1)
- Yamamoto, Bōyō, 1778-1859 (2)
- Yamamoto, Kaoru (University of Minnesota, Twin Cities) (1)
- Yamamoto, Ryoichi (Kyoto University) (1)
