I-M
- Michael Innes, (1906–1994)
- P. D. James, (1920– )
- J. A. Jance
- Natsuo Kirino, (1951– )
- Andrew Klavan
- Lori L. Lake (1960– )
- Josh Lanyon
- Stieg Larsson, (1954–2004)
- Dennis Lehane
- Paul Levinson, (1947– )
- Dennis Lynds, (1924–2005)
- John D. MacDonald, (1916–1986)
- Ross Macdonald, (1915–1983), pseudonym of Kenneth Millar
- Ernesto Mallo, (1948– )
- Henning Mankell, (1948– )
- Ngaio Marsh, (1895–1982)
- James McClure, (1939– )
- Jimmy McGovern
- Margaret Murphy
- Gladys Mitchell, (1901–1983)
- Christopher G. Moore, (1952– )
Read more about this topic: List Of Detective Fiction Authors