Dictionaries, Thesauruses, Pictures, and Press Releases
- John of Saxony
- John of Sicily
- John Simonis of Selandia
- Johnson, Douglas Wilson
- Johnson, Manuel John
- Johnson, Willard Drake
- Johnson, William Ernest
- Johnston, James Finlay Weir
- JOIDES
- Joint Oceanographic Institutions for Deep Earth Sampling
- joint set
- joint system
- jointed nine-awn
- Joinvillea
- Jolly balance
- Jolly, Philipp Johann Gustav von
- jollytail
- Jones, Harry Clary
- Jones, Walter Jennings
- jongkong