A
- AAE-1
- AAG
- AC-1
- AC-2
- ACC-1
- ACE
- ADC
- Aden-Djibouti
- ADRIA-1
- AEC-1
- Africa-1
- AJC
- AKORN
- Alasia
- Alaska United East
- Alaska United West
- ALBA-1
- ALC
- Aletar
- Alexandros
- Alonso De Ojeda
- Alpal-2
- ALVAL/ORVAL
- Americas I North
- Americas II
- Amerigo Vespucci
- Amitie
- AMX-1
- Anjana
- Antel
- Antilles Crossing
- APCN-2
- APG
- Aphrodite 2
- Apollo
- Apollo East and West
- Apricot
- Arcos-1
- Arctic Way
- Arsinoe
- ASC
- ASE
- ASH
- Athena
- ATISA
- Atlantis-2
- Atlas Offshore
- AU-Aleutian
- Australia Connect interlink
- AUTA
- Avassa
B
C
- Cadmos
- Canalink
- CANDALTA 1
- CANI-SMC
- CARCIP
- Caucasus Cable System
- CB-1
- C-BUS
- CDSCN
- Ceiba-1
- Ceiba-2
- Celia
- Celtic
- CeltixConnect
- CFX-1
- Channel Islands - 9 Liberty Submarine Cable
- Chile Antartica
- CIOS
- CJFS
- C-Lion 1
- COBRACable
- Columbus II
- Concerto-1
- Confluence-1
- Coral Sea
- Corfu-Bar
- CPC
- Cross Straits Cable Network
- CrossChannel Fibre
- Crosslake Fibre
- CSN-1
- Curie
D
E
F
G
H
I
J
K
L
M
N
P
S
- SAC
- SACS
- SAEX East
- SAEX West
- SAFE
- SAIL
- Saint Pierre and Miquelon Cable
- Saint Thomas - Saint Croix System
- SAIT
- SAM-1
- SAS
- SAS-1
- SAS-2
- SAT-3
- Saudi Vision Cable
- SBCS
- SCAN
- Scandinavian Ring North
- Scandinavian Ring South
- SCF
- Scotland-Northern Ireland 1
- Scotland-Northern Ireland 3
- Scotland-Northern Ireland 4
- Scotland-Orkney-Shetland
- Sea2Shore
- Seabras-1
- SEACOM
- SEA-H2X
- SEAK
- SeaLink
- SEA-ME-WE 4
- SEA-ME-WE 5
- SEA-ME-WE 6
- SEA-US
- SEAX-1
- Segunda FOS Canal de Chacao
- SEUL
- SG-SCS
- SHARE
- Shefa 2
- Silphium
- Sirius North
- Sirius South
- SJC
- SJC2
- SJJK
- SkagenFiber
- Skagerrak 4
- SKKL LABUAN BAJO-RABA
- SKR1M
- SMAP
- SMPCS
- SMPR-1
- Solas
- Southern Cross
- Southern Cross NEXT
- SPSC/Mistral
- SSSFOIP
- Subcan Link 1
- Subcan Link 2
- Svalbard
- Swansea-Brean
- Sweden-Latvia
T
- T3
- Taba-Aqaba
- Tabua
- TAM-1
- Tamares North
- TampNet FOC
- TampNet North Sea
- Tangerine
- Tanjun Pandan-Sungai Kakap Cable
- Tannat
- Tannat Extension
- Tasman Global Access
- TDCE
- TE North
- TEAMS
- TECS
- TEGOPA
- Tenerife-Gran Canaria
- TGN Atlantic
- TGN Eurasia
- TGN Gulf
- TGN Intra-Asia
- TGN Northern Europe
- TGN Pacific
- TGN Western Europe
- TGN-TIC
- Tikal/AMX-3
- TIS
- TLSSC
- Tokelau Domestic Submarine Cable
- TOPAZ
- TPE
- TPU
- TRANSCAN-3
- Trapani-Kelibia
- TSCS
- TSE-1
- TT-1
- Tui Samoa
- Turcyos-2
- TWA-1
