- J ... jacamar
- jacana ... Jackson College
- Jackson College for Negro Teachers ... Jackson, Tito
- Jackson, Toriano ... Jacobs, Jill Tracy
- Jacobs, Joseph ... Jaffe, Sam
- Jaffe, Stanley R. ... Jailolo
- Jaimal Singh ... Jalore
- Jalore ... James III
- James Island ... Jami Masjid
- Jamia Millia Islamia ... Jane Eyre
- Jane Fonda in Five Acts ... Jansson, Tove
- Jansson, Tove Marika ... Japanese dormouse
- Japanese encephalitis ... japygid
- Japygidae ... Jasione perennis
- Jasmin, Jacques ... Java sparrow
- Java stingaree ... Jayakanthan
- Jayalalithaa, Jayaram ... Jean II
- Jean Le Bel ... Jefferson, Mount
- Jefferson, Thomas ... Jemison, Mae
- Jemison, Mae Carol ... Jensen, Johannes V.
- Jensen, Johannes Vilhelm ... Jerusalem
- Jerusalem artichoke ... Jesus, Passion of
- Jesus, Society of ... Jewels of the Shrine, The
- jewelweed ... Jhukar culture
- Jhuldabhaj ... Jichen
- Jidai-matsuri ... Jimmy Corrigan: The Smartest Kid on Earth
- Jimmy Jam and Terry Lewis ... Jinping-I Dam
- Jinping-I Hydropower Station ... Jnanpith Award
- Jñātṛka ... Jobbik
- Jobe, Frank ... Johann Friedrich der Grossmütige
- Johann Friedrich der Mittlere ... John Crow’s Devil
- John D. and Catherine T. MacArthur Foundation, the ... John of Aviz
- John of Bavaria ... John Wick: Chapter 2
- John Wick: Chapter 3—Parabellum ... Johnson, Alan Arthur
- Johnson, Albert ... Johnson, La Raine
- Johnson, Lady Bird ... Johnston, Neil
- Johnston, Sir Harry Hamilton ... jökulhlaup
- Jökulsá á Fjöllum ... Jones, Absalom
- Jones, Alfred Ernest ... Jones, Lady Roderick
- Jones, LeRoi ... Jónsson, Karl
- Jöntürkler ... Josaphat
- Josaphat, Israel Beer ... Joshua Tree, The
- Joshua, Anthony ... Journal of Madame Knight, The
- Journal of My Life, The ... Joy, Rick
- Joy, William Nelson ... Juárez
- Juárez Celman, Miguel ... Judd, Wynonna
- Juddah ... Judith
- Judith Beheading Holofernes ... Jukagir
- Juke Girl ... Julius Caesar
- Julius Caesar ... Jun ware
- Jun yao ... Jungle Fever
- jungle fowl ... Jupiter’s-beard
- Jupiter, Temple of ... Just Around the Corner
- Just as Long as We’re Together ... Justinianopolis
- Justinianopolis ... Jyväskylä
