- Martins
- Martins (Crewman)
- Martins (Lieutenant)
- Martis Lok
- Martok
- Martok's Base (Beta Lankal)
- Martok's Base (Qo'noS)
- Martok, grandfather of Martok
- Martok (Ferengi)
- Martok (changeling)
- Martok (disambiguation)
- Martok (mirror)
- Martrin
- Martus Mazur
- Marty Miller
- Marty O'Farron
- Martyr
- Maruccius
- Marus III
- Marv Wolfman
- Marva
- Marva IV
- Marvel Comics
- Marvel Illustrated Books
- Marvel Star Trek, 2nd story arc
- Marvel continuity
- Marvin (disambiguation)
- Marvin Hildebrandt
- Marvin Laxer
- Marvin Rush (Lieutenant)
- Marvin Wanglestien
- Marvono'qhu
- Marx Brothers
- Mary
- Mary-Anne Rice
- Mary (disambiguation)
- Mary Alfreds
- Mary Ann Winters
- Mary Anne
- Mary Anne Sommers
- Mary Beth Sterling
- Mary Celeste
- Mary Ellen Bosche
- Mary Grant
- Mary Jane Hetzlein
- Mary Janowski
- Mary Joy Macalintal
- Mary Klesaris
- Mary Mac
- Mary Raymond
- Mary Reed
- Mary Richards
- Mary Scott-Wiecek
- Mary Sweeney
- Marya
- Maryann Summers
- Maryland
- Maryland (disambiguation)
- Maryllo Island
- Marz
- Marz (disambiguation)
- Marzan
- Marzan system
- Marzana
- Mas
- Mas To Gal class
- Masaba
- Masada (disambiguation)
- Masaharis
- Masai
- Masako Clarke
- Masallian
- Masan sector
- Masao
- Masao (Class F)
- Masao Okazaki
- Masaryk
- Masc
- Masc (disambiguation)
- Masc Taggart
- Mascali
- Mascarpone
- Masefield
- Masfarik
- Mash'gar
- Masheena-Kel
- Mashish Ehra
- Masiform D
- Masir
- Masked Breen
- Masks
- Masks (episode)
- Masks (novel)
- Mason
- Mason (Ambassador)
- Mason (disambiguation)
- Masoud Ahzed
- Masquerade
- Masquerade!
- Mass
- Mass driver
- Mass spectrometer
- Massachi
- Massachusetts
- Massachusetts (disambiguation)
- Massachusetts Institute of Technology
- Massaro
- Mastafh
- Master (disambiguation)
- Master Computer
- Master Computer (Shore Leave Planet)
- Master Dominion Pandect for Martial Crisis
- Master Resonator
- Master builder
- Master chief petty officer
- Master log
- Master of the Eyrie
- Master of the universe
- Master program
- Master scientist
- Master sergeant
- Masters (Rigellian)
- Masters (disambiguation)
- Masters of Gol
- Masters of War
- Masterslave
- Mastery of the Unavoidable
- Masti-Skaden
- Mastocal
- Masul
- Masum
- Masusaka Nakadai
- Mat'Ha class
- Mat'drih
- Mat'reth
- Mata Hari
- Matai
- Matalas refugee camp
- Matan
- Matasa
- Matata Kimya
- Material (hull)
- Materials officer
- Mathan
- Mathan's battleship
- Mathee
- Mathematics
- Mathen
- Mathenite
- Matheson (disambiguation)
- Mathias Rinn
- Mathom
- Mathon Tenv
- Matilda
- Matilda (McCoy)
- Matilda Johnson
- Matis
- Matopin rock fungus
- Matori
- Matram Tryst
- Matrayan blueglow
- Matriarch
- Matriarch (Other-worlder)
- Matrik
- Matrina Sedik
- Mats Daraan
- Matsaro
- Matsuda
- Matsumoto
- Matsumoto (disambiguation)
- Matt (disambiguation)
- Matt Boardman
- Matt Bobb (24th century)
- Matt Franklin
- Matt Gagnon
- Matt Haley
- Matt Kelbrim (23rd century)
- Matt Kelbrim (24th century)
- Matt Okumura (Starfleet)
- Matt Prescott Morton
- Matt Sagona
- Mattacks
- Mattea Hahn
- Matter
- Matter of Everything
- Matters of the Mind
- Mattesino
- Matthew
- Matthew (disambiguation)
- Matthew Adamson
- Matthew Alford
- Matthew Barnes
- Matthew Blumberg
- Matthew Brady
- Matthew Chiavelli
- Matthew Cushman
- Matthew Decker
- Matthew Decker (24th century)
- Matthew Decker (mirror)
- Matthew Dougherty
- Matthew Falce
- Matthew Finders
- Matthew Gold
- Matthew Graff
- Matthew Harold
- Matthew Harris
- Matthew Kelly
- Matthew Kelly (mirror)
- Matthew Mazibuko
- Matthew Nikon
- Matthew O'Hara
- Matthew Picard
- Matthew Rose (23rd century)
- Matthew Rose (24th century)
- Matthew Ruiz
- Matthew Zavitz
- Matthews
- Matthi orJurbes
- Matthias Pfau
- Matthias W. Jefferies
- Mattress
- Matulo
- Maturation
- Matzoh ball soup
- Mau'pek
- Maude Fox
- Maudie
- Mauk-to'Vor
- Maura
- Mauracher
- Maureen Granados
- Maurer
- Maurer IV
- Maurex 782
- Maurice (disambiguation)
- Maurice Hurley
- Maurice Picard
- Maurice Sheppley
- Maurit'li'och
- Maurita Tanj
- Maurnier
- Maurus
- Maury Ginsberg
- Mauser
- Mausetite
- Mavarian stout
- Mavek
- Mavek (Davonia)
- Mavek (Terok Nor)
- Mavok
- Mavro's Place
- Mawasi
- Mawasi cruiser
- Mawasi system
- Mawk
- Max
- Max Allan Collins
- Max Gabl
- Max Grodénchik
- Max Planck
- Max Vargas
- Maxez
- Maxia
- Maxia Zeta
- Maxia Zeta IV
- Maxia sector
- Maxillius
- Maxillius (23rd century)
- Maxillius (24th century)
- Maxilon Control 1
- Maximilian
- Maximilian (disambiguation)
- Maximilian Forrest
- Maximillian
- Maximinus Thrax
- Maximo Alisaunder Arrunja
- Maximum Warp
- Maximus (23rd century)
- Maximus (disambiguation)
- Maximus 1
- Maximus Achilles
- Maximus O'Connor
- Maxine Morris
- Maxona
- Maxor Tor
- Maxson
- Maxtor
- Maxwell (disambiguation)
- Maxwell Burke
- Maxwell Forrest
- Maxwell Hammett
- Maxwell Headroom
- Maxwell Levi
- Maxwell Orb 1
- Maxwell Petersen
- Maxwell Roberts
- Maxwell Thorpe
- May
- May'Duj class
- May'boq
- May'ron
- Maya (disambiguation)
- Maya Angelou
- Mayabi Fault
- Mayak Swamp
- Mayan calendar
- Mayara
- Mayer
- Mayer (disambiguation)
- Mayereen Viray
- Mayev
- Mayflower class
- Mayhar-Perth
- Maymora class
- Maynard
- Maynard (disambiguation)
- Maynooth
- Mayor
- Mayor-manager
- Maz
- Maz system
- Mazagalanthi
- Mazak
- Mazarite
- Mazav
- Mazda
- Mazda (planet)
- Mazda (star)
- Mazdan
- Mazdan high priest
- Mazlas
- Mazril
- Mazur
- Mazur Prime
- Mbandaka Inongo
- Mbewa
- McAdams
- McAllister C-5 Nebula
- McAuliffe
- McAuliffe (NCC-1647/11)
- McAuliffe (class H shuttlecraft)
- McBragg
- McBride
- McCain
- McCall