No.
The Hulk is not a mutant.
He is a mutate .
The distinction is subtle and for all intents and purposes more a matter of how a metahuman acquired their abilities, not necessarily a marker of power, puissance or capacity.
The Hulk, a mutate, is one of the most powerful beings on the planet.
Magneto, a mutant, has a vastly different power, but no less powerful or dangerous than the Hulk, whose abilities are almost entirely physical.
There are mutates whose powers are similar to known mutants and whose powers and abilities may be alike despite their origins.
Compare Kraven the Hunter's enhanced senses with Wolverine's for example.
Mutate: a word few use at Marvel.
Mutate is a term used to refer to superhumans who acquired their superpowers by exposure to some mutagenic compound or energy (either accidentally or deliberately).
The first group explicitly called Mutates were the Savage Land Mutates; a group of humans native to the Savage Land that were genetically altered using technology created by Magneto.
Early Marvel heroes acquired their powers due to radiation, technology, unknown or unusual energies.
These heroes include, the Fantastic Four, Spider-Man, the Hulk, Daredevil, the Black Panther and Luke Cage, just to name a few.
Unlike Marvel's Mutants, Marvel's Mutates require external stimuli to acquire their powers (i.e. they weren't born with the potential to manifest powers).
However, once mutated, the potential to pass those ability to their offspring does become a possibility.
See:
Franklin Richards Unknown to nearly the entire population of the Marvel Universe, the powers and abilities of Earth's Mutates and Mutants alike are the direct result of the genetic manipulations of the Celestials in humanity's distant past, who placed dormant genes within one cross-section of humanity, and the active Deviant and Eternal genes in other cross-sections.
Mutant: Also known as 'Homo Sapiens Superior' Mutants , a sub-group of Homo Sapiens Sapiens, has shown both a diverse range of powers and a scale of power previously unseen in either Deviants or Eternals .
(Both were genetically divergent humanoid species utilized by the Celestials for the testing of their genetic manipulation capacities.)
In addition: Mutants have a wide array of physical abilities without distorting the physical shape of humanity (unlike the Deviants , where form often equaled function), there are also diverse ranges of energy manipulation, temporal manipulation, and vast psionic potential the ability to alter the fabric of space-time, for feats like teleportation and space-flight and even alter the fabric of reality, changing both the past and the future in multiple universes.
These powers are inconsistently scattered among the human populace and has on more than one occasion been potentially capable of destroying the entire species.
scifi.stackexchange.com/users/2765/Thaddeus Howze
This is a question of terminology.
In the Marvel universe "mutant" means something very specific.
It is the casual term for Homo superior , people whose latent X-gene has become active.
The Hulk is not a Homo superior .
The superhuman abilities possessed by Dr. Banner are the result of exposure to gamma radiation.
He was not born with them, and they are not a manifestation of the X-gene.
Because radiation was involved, one could reasonably call Dr. Banner a "mutant" in the traditional real-world sense--but he is not a "mutant" in the sense which the Marvel universe uses that word.
scifi.stackexchange.com/users/13941/BESW
Mutants are born, not made.
The Marvel definition includes people who were born with powers, even if those powers didn't appear until the mutant was a teenager.
Hulk, Spider-Man,
Venom - these are examples of mutates, not mutants.
Their bodies mutated due to radiation and chemicals, not a genetic mutation that was present since birth.
Wolverine wasn't born with the metal skeleton, but he was born with bone claws (the metal covered them) and his healing factor.
Therefore he is a mutant with an added impervious skeleton.
scifi.stackexchange.com/users/19209/Anz Joy
Actually according to John Byrne's run on Hulk in the late 80s, Banner is a mutant, he has the ability to survive a gamma bomb.
scifi.stackexchange.com/users/4642/Mickey
As we know,Hulk is not a mutant by birth.
At least he is not like that big monster by birth.
He had actually undergone a reaction of gamma rays which improves his genes and make them x-genes.
So he became a mutant then.
But still there is no change in his skeleton.
So he is technically not a mutant.
scifi.stackexchange.com/users/15811/Ritzz081
I would say that, according to the comic book definition, hulk is probably not a mutant.
For example, all the X-Men were born with the gene that codes for their powers, which were latent until a certain age and brought about by stress, puberty, or both.
The Hulk was essentially "given" his powers by a freak accident.
Now, one could argue that the Dr. Bruce Banner had a rare genetic disposition to accept gamma rays and become the green machine, but then the experiment shouldn't be reproducible.
One look at Doc Samson, She-Hulk (well actually she doesn't count because they're related and she could carry the same gene) and the Abomination (or is General Ross as the Red Hulk?
I forget which) tells us that the gamma-ray conversion process is, to some extent reproducible, and so Hulk isn't really a mutant.
Or so it could be argued.
In the everyday, colloquial usage of the term, Hulk is a mutant.
But that's outside of comic-dom, so....
scifi.stackexchange.com/users/19230/Thomas Anderson
Agreeing with the other writers, mutants are born not made.
Their powers manifest usually around puberty.
In the case of most X-Men, they were born with the mutation in their genes.
Hulk, according to the Marvel Universe, would be classified as a mutate, powers were bestowed upon him by external forces.
As indicated in Deadpool , Wade was not born a mutant, so technically he is a mutate as well, not a mutant.
However, the movie also suggested people are born with the gene, it just never manifested as powers or abilities.
scifi.stackexchange.com/users/116101/Joliv424
Hulk has extraordinary powers, well above that of a normal human being.   Can we say that Hulk is a mutant?
Is the Hulk technically a mutant?
scifi.stackexchange.com
<marvel><the-incredible-hulk>
scifi.stackexchange.com/questions/42960
scifi.stackexchange.com/users/18957/user18957
According to the comic book definition, Hulk would be classified as a mutate, not a mutant, as his powers were bestowed upon him by a freak accident. The Hulk is a mutate; not a mutant.
The Hulk is a mutate; not a mutant.