- John S. Hammond
- John Shortle
- John Siirola
- John Silberholz
- John Sniezek
- John Sweka
- John Tomlin
- John Trindle
- John Turner
- John W. Brau
- John W. Chinneck
- John W. Fowler
- John W. Pratt
- John Watson
- John Yao
- Johns Hopkins University Student Chapter
- Johnston County (NC) Public Schools
- John N. Hooker
- Joice C. Ribeiro Giacon
- Joline Uichanco
