Insignia

One of the universals across all Transformers continuities has been the use of insignia to differentiate members of respective armies, and sometimes sub-factions within armies or even individuals.

Generation 1
''This is an ancient symbol that Shockwave found in the G1 Dreamwave comic. Although Transformers have been split into two races, they are one species, he claims.''
 * Ancient Transformer

''It seems likely that in the real world, the Autobot symbol was derived from a stylized drawing of Prowl's toy's head. In the Marvel Comics continuity, the Autobot symbol was seemingly based on the face of the Last Autobot. In the original animated series, it was a mark of the Quintesson slave brand.'' ..........
 * Autobot 


 * Autobot (ancient)


 * Autobot (War Within)

''It seems likely that in the real world, the Decepticon symbol was derived from a stylized drawing of Soundwave's toy's head. The model sheet of the symbol created for the G1 cartoon misinterpreted the bevelled detailing of the top of the symbol as a third spike in the center of the crest, and it appeared in the show rendered in this manner almost universally.'' ........
 * Decepticon


 * Decepticon (War Within)


 * EDC (cartoon)


 * EDC (Dreamwave)


 * Fallen


 * Optimus


 * Machination


 * Malignus


 * Quintesson


 * Sparkbots

Used by Ratbat's group in The War Within era
 * Ultracon


 * Wreckers


 * Z Foundation


 * Zarak Consortium

G.I. Joe Crossovers

 * Cobra


 * G.I. Joe

Generation 2
''The G2 Autobot symbol seems clearly based on Optimus Prime. In the Marvel Comics continuity this change may have occured since the Last Autobot had come and gone.''
 * Autobot




 * Cybertron Alliance

This symbol was used by Jhiaxus's Cybertronian Empire, who considered themselves neither Autobot nor Decepticon.
 * Cybertronian



''The G2 Decepticon symbol seems to be a stylized, updated G1 Decepticon symbol. Bludgeon's Decepticons adopted this symbol around 1991, apparently unaware it was also being used by the Cybertronian Empire that they would soon encoutner.''
 * Decepticon



Beast Era
From IDW's Beast Wars comic books Worn by Razorclaw in Dawn of Future's Past''.
 * Blentron
 * Dinobot
 * Maximal
 * Maximal (Beast Machines)
 * Moon
 * Mutant
 * Predacon
 * Predacon (G1)
 * Predacon (Timelines)
 * Seacon Space Pirate
 * Vehicon

Robots in Disguise
''Takara used this symbol, to represent the Decepticon (Combatron) sub-group in Car Robots- it's an upside-down G2 Autobot symbol, which had been molded into the Scourge toy, a redeco of G2 Laser Optimus Prime. The American version removed them, and used the traditional Decepticon symbol. Though it can be briefly seen in the cartoon, this symbol does not 'exist' in the American version.''
 * Japanese Decepticon

Unicron Trilogy

 * Cybertron Defense Team
 * Earth
 * Gigantion
 * Jungle Planet
 * Mini-Con
 * Powerlinx
 * Team Ironhide
 * Unicron
 * Velocitron

2007 Movie
A Secret organization on earth that is trying to save humanity from the Autobots and Decepticons. An elite group of infiltrators determined to steal the All Spark for their own purposes.
 * Sector Seven
 * Mountain Dew Robots

Others

 * Go-bots
 * My 1st Transformers

Unused concepts
Used for promotion of the comic, not in the actual story. These symbols were seen in concept sketches for the canceled Transtech line.
 * Cobra/Decepticon
 * Transtech
 * Autobot
 * [[Image:Transtech Autobot symbol.png|100px]]
 * Decepticon
 * [[Image:Transtech Decepticon symbol.png|100px]]