- Kabidi Khadija
- Kageyama Masa
- Kaiser Johannes W.
- Kaly François
- Kam Jonghun
- Kamsu Tamo Pierre Honoré
- Kane Cheikh Sidi Ethmane
- Kang Kyun-Kuk
- Kang Sarah M.
- Kanzow Torsten O.
- Kao Hsun-Ying
- Kaplan Jed O.
- Kapoor Rikita
- Karnauskas Kristopher
- Karspeck Alicia
- Kataoka Takahito
- Kattsov V.
- Keenlyside Noel S.
- Keerthi Madhavan Girijakumari
- Keller Kathrin M.
- Keller Linda M.
- Kendon Mike
- Kenigson Jessica
- Kennedy John J.
- Kergoat Laurent
- Kervankiran Sefer
- Key J.
- Khalil Yala
- Khatiwala Samar
- Khodri Myriam
- Kholodov A. L.
- Khoshkam M.
- Kikuchi T.
- Kiladis George N.
- Kilbourne Hali
- Kimberlain Todd B.
- Kimoto Masahide
- Kim Seon Tae
- Kindermann Stephan
- King Darren
- King Martin P.
- King M. P.
- Kirtman Benjamin
- Klein Cornelia
- Klein Goldewijk Kees
- Kleiven H. F.
- Klingaman Nicholas P.
- Klumpp Katja
- Knaff J. A.
- Knaff John A.
- Knohl Alexander
- Knudsen Karen Luise
- Koité M.
- Kolodziejczyk Nicolas N.
- Koné I.
- Korshunova Natalia N.
- Koskela Tapani
- Kosmowski Frédéric
- Kouadio Yves K.
- Kouakou Patrice
- Kounta Lala
- Kouressy Mamoutou
- Kranthikumar Chanda
- Kratz David P.
- Krinner Gerhard
- Krishfield R.
- Krishnan R.
- Krishna R. P. M.
- Krivova Natalie
- Kruger Andries
- Kruk Michael C.
- Kucharski Fred
- Kug Jong-Seong
- Kuijpers Antoon
- Kumar Arun
- Kumar Sujay V.
- Kwon Young-Oh