Encyclopedias, Almanacs, Transcripts, and Maps
- Keegan, Kevin
- Keizan
- Kelp and Seaweed
- Kennedy, Robert Francis, Jr. (1954 – ) American Environmental Lawyer
- Kenyon, Kathleen
- Kepone
- Kerala Caecilians (Uraeotyphylidae)
- Kerényi, Károly
- Kesterson National Wildlife Refuge
- keyboard instrument
- Kh?nag?h
- Kh?rij?s
- Khafre, Great Sphinx of
- Khan, (Niazi) Imran
- Khanty and Mansi Religion
- Khatami, Muhammad
- Khmer Religion
- Khoi and San Religion
- Khomiakov, Aleksei
- Khrushchev, Nikita Sergeievich