By Surname:
Important note: inclusion on this index does not imply anything about the sexual orientation of the person - they may have expressed an opinion on homosexuals or lesbians, have written a book on the subject, or someone else may have mentioned them in a newspaper cutting.
- Michael Kallenbach
- Firdaus Kanga
- Arno Karlen
- Abraham Karpas
- Peter Katin
- Ephraim Katz
- Sidney Katz
- Dan Kavanagh
- P. J. Kavanagh
- Jackie Kay
- Danny Kaye
- Gorden Kaye
- Molly Keane
- Patrick Kearney
- H. R. F. Keating
- Michael Keeling
- Paul Keenan
- Helen Keller
- Patrick Kelly
- Ruth Kelly
- Lindsay Kemp
- Ian Kennedy
- Ludovic Kennedy
- Mary Kenny
- F. E. Kenyon
- Peter Keogh
- Michael Kerr
- Paul Kerryson
- Michael Kettle
- John Maynard Keynes
- James Kilfedder
- Soraya Khashoggi
- Jacqueline Kimberley
- Billie-Jean King
- Francis King
- Alan King-Hamilton
- Lord Kingsdale
- Miles Kingston
- Neil Kinnock
- Alfred Kinsey
- Anna Kipling
- Rudyard Kipling
- Kathy Kirby
- Tommy Kirk
- Richard Kirker
- James Kirkup
- Linda Kitson
- Celia Kitzinger
- Calvin Klein
- Edward Klein
- Jill Knight
- Mark Knopfler
- Ed Koch
- R. C. Kolodny
- David Kopay
- K. T. Koshy
- David Kossoff
- William P. Kraemer
- Larry Kramer
- Reggie Kray
- Ronnie Kray
- Leonard Kristal
- Una Dr. Kroll
- Arndt Krupp
- Hanif Kureishi
- Irma Kurtz
- Tom Kalin
- Kaka Kaka
- T R Knight
- Peter Kay
- Oona King