- SUZ-3
- SW21 class
- SW7 class
- S Monicus I
- S type asteroid
- S type star
- Sa'Gliszppkk
- Sa'am of Calhoun
- Sa'arovian
- Sa'et
- Sa'il Kazzarus
- Sa'veth
- Sa-Gahnesaam
- Sa-na'Mdeihein
- Sa-te kru
- Saad
- Saalek
- Saalfield Publishing
- Saar string
- Saart
- Saavik
- Saavik's Story
- Saavik (mirror)
- Saavta
- Sabak
- Sabak's armor
- Sabara
- Sabba
- Sabbath
- Sabbath Nile
- Saber
- Saber (disambiguation)
- Saber class
- Sabercat
- Sabih Ali
- Sabin Genestra
- Sabino Canyon
- Sabot
- Sabotage (song)
- Sabran
- Sabre (carrier vessel)
- Sabre Bear class
- Sabre bear
- Sabrina
- Sabrina Simon
- Sabrina Stuart
- Sabu'ka region
- Sabutahim
- Sacagawea
- Sacajawea
- Sacajawea (NCC-74656/05)
- Sachem II
- Sachem IV
- Sack Incident
- Sackmanov apple
- Sacraments of Fire
- Sacred Beast Cult
- Sacred Cargoes act
- Sacred Chalice
- Sacred Chalice of Rixx
- Sacred Ground
- Sacred Marketplace
- Sacred Order of the Extended Digits
- Sacred Scepter of Betazed
- Sacred Scriptures
- Sacrifice of Angels
- Sacrifice of Angels (episode)
- Sacrifices and Survivors
- Sacrifices of War
- Sacritorum caste
- Sacro
- Sadachbia
- Sadakita Rass
- Sadall
- Sadalore
- Sadara
- Sadat City
- Sadat VI
- Saddam Hussein
- Sadek
- Sadera
- Sadi
- Sadie Johns
- Sadira
- Sadora
- Sadora Rex
- Sadorah City
- Sadr
- Sadvis
- Saed Squire
- Saeena
- Saeena's species
- Saeo Uristilaen
- Saf
- Safari
- Safari in Violet
- Safe Harbors
- Safe house
- Safety protocol
- Saff
- Saffi Larsen
- Saffir
- Safranski
- Sagan
- Sagan (Type-10 shuttlecraft)
- Sagan Station
- Sagan class
- Sagan subclass
- Sagar bav Balkar
- Sage
- Sage (leader)
- Sage (plant)
- Sagitta
- Sagittarian
- Sagittarius
- Sagittarius-Carina Arm
- Sagittarius A*
- Sagittarius Cluster
- Sagittarius Dwarf Galaxy
- Sagittarius Reach
- Sagittarius class
- Sagittarius constellation
- Sagittarius sector
- Sagua La Grande
- Saguloo
- Sah
- Sahna
- Sahndara
- Sahqooq
- Sahran
- Sahu
- Sahving Valley
- Sahvisha
- Sailing
- Sailing Down That Golden River
- Sailing vessel
- Saint
- Saint Anne
- Saint George
- Saint Patrick's Day
- Saint Petersburg
- Saint Petersburg State University
- Saint Walker
- Saints of Imperfection
- Sait
- Sajak
- Sajek
- Sakal Damar
- Sakari
- Sakari system
- Sake
- Sakelo City
- Sakethan
- Sakethan burial mound
- Sakharov
- Sakian
- Sakiel
- Sakill
- Saknussen
- Sakonna
- Sakonna (mirror)
- Sakrysta
- Sakto
- Sakud Armnoj
- Sakura
- Sakura Prime
- Sakurazaka
- Sakuro's disease
- Sal
- Sal'tara
- Sal'tasnii
- Sal-tor-fee
- Sal McMurphy
- SalaH
- Salaam
- Salad
- Saladin
- Saladin (disambiguation)
- Saladin class
- Saladin class (Kelvin timeline)
- Salagho Threx
- Salah Hatrash
- Salak
- Salam grass
- Salamar
- Salan Ral
- Salar
- Salatrel
- Salavar Stars
- Salavat
- Salaya
- Salayna
- Salazaar
- Salazaar A-1
- Salazaar B-1
- Salazaar Shipyard
- Salbhai
- Salbhai resistance cell
- Saldara
- Saldev
- Saldo
- Saldok
- Salek
- Salem
- Salet
- Salgorax
- Salgorax-Neptor system
- Salieh
- Salinia
- Salisbury
- Salisbury steak
- Salish (material)
- Salius
- Salius VI
- Salla
- Salla zh'Tran
- Sallos
- Sally
- Sally Archer
- Sally Bellero
- Sally Jacoby
- Sally Rhodes
- Sally Ride
- Sally Ride (disambiguation)
- Sally Ward
- Sally Whitley
- Salma
- Salmak
- Salmon P. Chase
- Salok
- Salokonos
- Salome Jens
- Salon
- Salon of the Forgotten Cap
- Salor
- Salt
- Salt Lake City
- Saltah'na
- Saltah'na clock
- Saltok
- Saltroni 815
- Salurian rum
- Salva
- Salva II
- Salva IV
- Salvada
- Salvage Law
- Salvatore
- Salvatore Santini
- Salvum
- Salzburg
- Sam
- Sam (Crewman)
- Sam (comic)
- Sam (fish)
- Sam (miner)
- Sam Andrews
- Sam Bowers
- Sam Bowers (mirror)
- Sam Fuller
- Sam Goldwyn
- Sam Gooding
- Sam Houston
- Sam Jameson
- Sam Kerby
- Sam Klock
- Sam Lavelle
- Sam Rayburn
- Sam Redbay
- Sam Spade
- Sam Yamata
- Samaara
- Samantha
- Samantha Green
- Samantha Wildman
- Samanthan Rutherford
- Samarian sunset
- Samaritan Snare
- Samarium
- Samdev
- Samir al-Halak
- Samnar
- Samnar sector
- Samon
- Samos
- Samos 1
- Samra Tor
- Samsar class
- Samsit
- Samson (disambiguation)
- Samson class
- Samsusss
- Samton
- Samuel
- Samuel Abraham Kirk
- Samuel Beckett
- Samuel Blackfoot
- Samuel Boma
- Samuel Boma (Kelvin timeline)
- Samuel Carter
- Samuel Chen
- Samuel Clarkson
- Samuel Clemens
- Samuel Clemens (mirror)
- Samuel Cogley
- Samuel Cogley (Kelvin timeline)
- Samuel Cogley (mirror)
- Samuel Estragon
- Samuel Gardner
- Samuel Griffith
- Samuel Hopkins
- Samuel Morse
- Samuel Robert Fox
- Samuel Sisko
- Samuel Skinner
- Samuel Solomon Qasr
- Samuel Tashket
- Samuel Taylor Coleridge
- Samuel Wellington
- Samuel Winters
- Samuel Winters (mirror)
- Samuels
- Samuels (disambiguation)
- Samuelsson
- Samurai
- Samurai (disambiguation)
- Samurian
- Samved
- San-Tarah
- San-chera
- San-reak
- San Daraan
- San Diego
- San Diego (disambiguation)
- San Diego Chronicle
- San Francisco
- San Francisco Bay
- San Francisco Chronicle
- San Francisco Fire Department
- San Francisco Fleet Yards
- San Francisco Gazette
- San Francisco National Cemetery
- San Francisco Police Department
- San Francisco Register
- San Lobos Atomic Research Facility