Opus No. Titlesort ascending Date Setting Publication type I.U.C. Notes
26 Neutron Star April, 1968 Known Space: Collection Collection Collected stories of Beowulf Shaeffer, as well as other Known Space stories. Contents: Neutron Star At the Core Relic of the Empire, A Soft Weapon, The Flatlander Ethics of Madness, The Handicapped, The Grendel
N-Space August, 1990 N/A Collection Major retrospective of Niven's career from 1964-1990. Contents: Introduction: "The Maker of Worlds" by Tom Clancy On Niven excerpt from World of Ptavvs excerpt from A Gift from Earth excerpt from Ringworld "The Fourth Profession" excerpt from Protector excerpt from The Mote in God's Eye, with Jerry Pournelle Dramatis Personae Foreword: Playgrounds for the Mind Bordered in Black Long Night, The All the Myriad Ways For a Foggy Night Meddler, The Passerby Down in Flames Fourth Profession, The Shall We Indulge in Rishathra? Man of Steel, Woman of Kleenex Inconstant Moon What Can You Say About Chocolate Covered Manhole Covers? Cloak of Anarchy Hole Man, The Night on Mispec Moor Flare Time Locusts, The Building the Mote in God's Eye Brenda Return of William Proxmire, The Tale of the Jinni and the Sisters, The Madness Has Its Place Niven's Laws Blowing Smoke Kiteman, The Alien in our Minds, The Space Bibliography
86 My Universe and Welcome To It! October, 1971 Introduction Introduction to Known Space.
My Universe and Welcome Back! November, 1996 Known Space: About Introduction New introduction for the new Known Space collection. The title is a direct reference to My Universe and Welcome To It!
My Favorite Story October, 1990 N/A Essay Article about writing Inconstant Moon
171 Murder of Halley's Comet, The May, 1989 The Fleet The Fleet Collaboration, co-written with David Drake
78 Mote in God's Eye, The October, 1974 Motie Novel Collaboration, co-written with Jerry Pournelle, set in Pournelle's Codominium universe. See the sequel, Gripping Hand, The
Most and Least-Favored Films of Famous SF Authors, The August, 1978 N/A Interview Interview
153 More Magic June, 1984 Magic Universe Collection edited by Larry Niven, illustrations by Alicia Austin. Contents: "Shadow of Wings" by Bob Shaw "Mana from Heaven" by Roger Zelazney Lion in his Attic, The; Talisman
Moon Maze Game, The August, 2011 Dream Park Novel Collaboration with Steven Barnes the newest sequel to the Dream Park novels, set on the Moon.
Moon Bowl, The (working title) January, 2020 Novel Collaboration with Jerry Pournelle & Michael Flynn.
Mom and the Kids March, 1990 The Fleet Short Story Collaboration, co-written with David Drake
93 Mistake January, 1976 Stand Alone Short Story In space, no one can hear you take a pill
44 Misspelled Magician, The May, 1970 Stand Alone Short Story Collaboration, co-written with David Gerrold, a.k.a. "The Misspelled Magishun" expanded as Flying Sorcerers, The
Mission to Abisko November, 1998 N/A Non-Fiction Report on a trip to an exclusive conference at Abisko Biological Research Station in Sweden, with fellow travellers Greg Bear and Gregory Benford.
Missing Mass, The December, 2000 Draco Tavern Short Story D.T. 14 Read It Here! Draco Tavern where is the universe's extra mass? It was eaten!
Mice Among Elephants October, 2016 N/A Novella Collaboration with Gregory Benford
Memoir January, 1980 N/A Introduction An introduction to the short story All the Myriad Ways  
Memoir September, 1986 Non-Fiction Niven describes his relationship with the editor of If, Frederik Pohl, and the writing of the award-winning Neutron Star
35 Meddler, The October, 1968 Stand Alone Short Story A science-fiction noir crime mash-up

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