- ! (Fortnite)
- "Next" Metal Gear Solid
- .32ACP
- .45ACP
- .45LC
- 12 Days of Metal Gear
- 12 Gauge
- 1940s
- 1950s
- 1960s
- 1970s
- 1980s
- 1990s
- 1st Aid Kit (MGA card)
- 2000s
- 2010s
- 2020s
- 3D Photo Frame
- 5.45x39mm
- 5.56mm
- 5.7x28mm
- 7.62x39mm
- 7.62x54mmR
- 8mm film reels
- 9mm
- A.L. Granin (MGA card)
- ADA (MGA card)
- AI Lab
- AI pod
- AI weapon (Peace Walker Project)
- AK-102
- AK-47
- AKM (MGA card)
- AKS-74u
- AKS74u (Laser.S) (MGA2 card)
- AKS74u (Laser.S) (MGA card)
- AKS74u (MGA2 card)
- AKS74u (MGA card)
- AL
- AL-Aurelia 8000
- AMD-65
- AMD63
- AN94
- APE T-41LV
- ATGC
- AV-8B Harrier II
- AXE
- A Soul Can't Be Cut
- A Stranger I Remain
- Aabe Shifap Ruins
- Abducted children (Guadalajara)
- Abkhazia
- Abkhazian Coup
- Abraham
- Achievements/Trophies
- Action ++ (MGA card)
- Action + (MGA card)
- Action Gameside
- Active sonar
- Adam
- Adam-ska Special
- Adam (cut character)
- Adam (disambiguation)
- Add Fall (MGA card)
- Advent Palace
- Aerial Command Center
- Aerial Mine
- Afghanistan
- Afghanistan Central Base Camp
- African countries
- Afrikaans interpreter
- Afrikaans interpreter (Kiziba Camp)
- Afrikaner interrogator (Kiziba Camp)
- Aim (MGA card)
- Air Troopers
- Airport (San Hieronymo Peninsula)
- Akina Minami
- Akio Ōtsuka
- Alan Turing
- Alaska
- Alastair Duncan
- Aldea de los Despiertos
- Aleksandr Leonovitch Granin
- Alex Garner
- Alexandra Pikrammenos
- Alice Hazel
- Allan Lurie
- Allen Iishiba
- Ally Cost -12 (MGA card)
- Ally Cost -4 (MGA card)
- Ally Cost -8 (MGA card)
- Amanda Valenciano Libre
- Ambush Alley
- Ambush in Africa
- American technician (Ngumba Industrial Zone)
- Amiibo
- Ammunition case
- Amputation
- Anachronisms in the Metal Gear series
- Analyzer
- Andrea Zafra
- Andrew
- Andrey Dolzaev
- Angola-Zaire border region
- Antenna
- Anti-Patriot faction
- Anti-bacterial drug
- Anti-personnel sensor
- Antidote
- Antifreeze glycopeptide
- Antitheft device
- Antony Del Rio
- Aoife Ní Fhearraigh
- April Fools' 2008 joke
- April Fools' 2010 joke
- Arakawa Under the Bridge
- Area 51
- Arena
- Armadillo
- Armed forces
- Armored column commander (Nova Braga)
- Armored personnel carrier
- Armory
- ArmsTech
- Arms Magazine
- Arms Material
- Arms dealer (Nova Braga)
- Army's Heaven
- Army of the Devil
- Aromatic polyamide
- Arowana
- Arsenal Gear
- Arsenal Ship Project
- Arthropods (food)
- Artificial Intelligence
- Ashley Wood
- Asian countries
- Assassin's Straw Box
- Assassination of Dr. Clark
- Assault rifle
- Attack 1 Enemy (MGA card)
- Attack dog
- Attack on Zero
- Attack team
- Augmented reality
- Augustine Eguabon
- Augusto César Sandino
- B.B.
- BEAGLE
- BOAR-53CT
- Backup
- Balaclava
- Bald Marine (Cuba)
- Ballistic shield
- Bampeve Plantation
- Banana
- Bananal Fruta de Oro
- Bandage
- Bandage (MGA card)
- Bandana
- Barack
- Barranquilla Coast Camp
- Barry Dennen
- Bartini Beriev VVA-14
- Base Development Unit
- Bastard Yota
- Battery
- Battle Cries & the Kotodama Effect
- Battle Dress
- Battle Dress Uniform
- Battle Gear
- Battle Points
- Bear
- Beauty and the Beast Unit
- Beng Spies
- Benito Martinez
- Benjamin
- Beretta 92
- Big Boss
- Big Boss (Gindra)
- Big Boss (MGA card)
- Big Boss (Operation 747)
- Big Boss (Super Smash Bros)
- Big Boss (disambiguation)
- Big Boss Emblem Criteria
- Big Mouth
- Big Shell
- Big Shell Incident
- Binoculars
- Bird
- Bird (food)
- Birthday
- Black Arts Viper
- Black Chamber
- Blade Mode
- Blade Wolf
- Blade weapons
- Blood Bath
- Bloody Brad
- Blueprint
- Body-Snatcher
- Body Armor (MGA card)
- Body Shot (MGA card)
- Body armor
- Boeing E-3 Sentry
- Boktai (series)
- Boktai 2: Solar Boy Django
- Bolshaya Past
- Bomb Blast Suit (MGA card)
- Bomb Switch (MGA card)
- Bomb blast suit
- Bomb detection sensors
- Bomber
- Bon Curry
- Booby trap
- Book (MGA card)
- Boombox
- Boorda
- Boris (disambiguation)
- Boris Volgin
- Boris Vyacheslavovich Popov
- Bosque del Alba
- Boss (disambiguation)
- Boss (title)
- Boss (video gaming)
- Boss Coffee
- Box A (MGA card)
- Box B (MGA card)
- Box C (MGA card)
- Box D (MGA card)
- Brian Cummings
- Brian McBride
- Briefing (MGA card)
- Brown Town
- Bucket
- Buddy
- Bug Juice
- Builder Bed (MGA card)
- Bulldozer
- Buta
- Bwala ya Masa
- C3 (MGA card)
- C4 (MGA2 card)
- C4 (MGA card)
- CAWS
- CFA Legendary Gunsmith
- CFA executive (Nova Braga)
- CFA officials (Kiziba Camp)
- CIA Director
- CIA agent (OKB Zero)
- CQB
- CQC
- Cafetal Aroma Encantado
- Calling to the Night
- CalorieMate
- Cam Clarke
- Camera
- Camera (disambiguation)
- Camera view
- Camino de Lava
- Camouflage
- Camouflage (Metal Gear Solid 3)
- Camouflage (Metal Gear Solid 4 and Metal Gear Online)
- Camouflage (Peace Walker)
- Camouflage (Survive)
- Camouflage (The Phantom Pain)
- Can't Say Goodbye to Yesterday
- Canard Rotor/Wing
- Captain (Mother Base survivor)
- Card
- Card LV.1 (MGA card)
- Card LV.2 (MGA card)
- Card key
- Cardboard Box (Fortnite)
- Cardboard Box (Super Smash Bros)
- Cardboard box
- Carl Gustav
- Carla White
- Carlos Esmeralda
- Castlevania: Lords of Shadow
- Catapult
- Catarata de la Muerte
- Catherine
- Catherine Taber
- Cell phone
- Central Intelligence Agency
- Ceramic Armor (MGA card)
- Cerberus S220
- Chaff Grenade (MGA2 card)
- Chaff Grenade (MGA card)
- Chaff grenade
- Chaigidiel
- Challenge Tasks
- Chameleon Camouflage System
- Chameleon Suit
- Chapter 5: Season 1
- Character Gallery
- Character Gallery/Metal Gear
- Character Gallery/Metal Gear: Ghost Babel
- Character Gallery/Metal Gear 2
- Character Gallery/Metal Gear Acid
- Character Gallery/Metal Gear Acid 2
- Character Gallery/Metal Gear Rising: Revengeance
- Character Gallery/Metal Gear Solid
- Character Gallery/Metal Gear Solid: Peace Walker
- Character Gallery/Metal Gear Solid: Portable Ops
- Character Gallery/Metal Gear Solid 2
- Character Gallery/Metal Gear Solid 3
- Character Gallery/Metal Gear Solid 4
- Character Traits
- Character appearances in the Metal Gear series
- Charles Schmeiser
- Charles de Gaulle
- Charlie
- Charlie Schlatter
- Charon Corps
- Che Guevara
- Chester
- Chicken
- Chico
- Chihoko Uchiyama
- Chikao Ōtsuka
- Child soldier
- Children in Zanzibar Land
- China
- Chinaman
- Chloe Dubois
- Choke (MGA card)
- Chris Jenner
- Chris Jenner (MGA card)
- Christopher Randolph
- Chrysalis
- Church (Eastern Europe)
- Chyornaya Peschera
- Chyornyj Prud
- Cigar
- Cigarette
- Cigarette gas-spray gun
- Cipher (disambiguation)
- City Under Siege
- Clark's assistant
- Classified Intel Acquisition
- Claymore (MGA2 card)
- Claymore (MGA card)
- Climb (MGA card)