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TV Canon

Q has demonstrated the ability to transcend multiple time-streams in the episode TNG: All Good Things where Picard inadvertently destroys the human race (through the creation of a temporal paradox). It also appears that the Q continuum itself exists outside the normal "multiverse" seen within the Star Trek universe with Quinn noting that the 'dusty road' (seen in VOY: Death Wish) leads to the universe.

Comic canon

This issue was discussed by Trek writer Mike Johnson after the appearance of Q in the new Star Trek timeline (in the ongoing comic serial "The Q Gambit"):

He's definitely the Q we know from The Next Generation, correct?

MJ: Indeed. The Q Continuum exists outside of the alternate timelines that our tiny flesh-brains occupy. Every Q is the same Q across all parallel realities, and this Q maintains both his fascination with and his contempt for the human species in particular.

Is this technically set before Q has met Picard and the others in TNG?

MJ: After. In this new story, Q has already had all of the adventures we've seen in the television series over the years, and he's aware that Spock Prime (Leonard Nimoy) traveled from the old timeline to the new one.

So does this mean there['s] a Q in the new-Trek universe, or is there only the one?

MJ: Maaaaaaybe.

In-Universe Reference texts

The Star Trek Encyclopedia directly refers to the Q as being extradimensional rather than existing within any specific dimension or universe:

Q, (John DeLancie) : An immensely powerful extradimensional entity. While possessing near-godlike powers. Q also exhibits a childlike petulance and sense of playfulness

TV Canon

Q has demonstrated the ability to transcend multiple time-streams in the episode TNG: All Good Things where

Picard inadvertently destroys the human race through the creation of a temporal paradox.

It also appears that the Q continuum itself exists outside the normal "multiverse" seen within the Star Trek universe with Quinn noting that the "dusty road" (seen in VOY: Death Wish) leads to the universe.

Comic canon

This issue was discussed by Trek writer Mike Johnson after the appearance of Q in the new Star Trek timeline (in the ongoing comic serial "The Q Gambit"):

He's definitely the Q we know from The Next Generation, correct?

MJ: Indeed. The Q Continuum exists outside of the alternate timelines that our tiny flesh-brains occupy. Every Q is the same Q across all parallel realities, and this Q maintains both his fascination with and his contempt for the human species in particular.

Is this technically set before Q has met Picard and the others in TNG?

MJ: After. In this new story, Q has already had all of the adventures we've seen in the television series over the years, and he's aware that Spock Prime (Leonard Nimoy) traveled from the old timeline to the new one.

So does this mean there['s] a Q in the new-Trek universe, or is there only the one?

MJ: Maaaaaaybe.

In-Universe Reference texts

The Star Trek Encyclopedia directly refers to the Q as being extradimensional rather than existing within any specific dimension or universe:

Q, (John DeLancie) : An immensely powerful extradimensional entity. While possessing near-godlike powers. Q also exhibits a childlike petulance and sense of playfulness

The Q continuum seems to exist outside the normal "multiverse" seen within the Star Trek universe. Note that Q is capable of transcending multiple time-streams in the episode TNG: All Good Things where Picard inadvertently destroys the human race by creating a temporal paradox.

The Star Trek Encyclopedia directly refers to the Q as being extradimensional rather than existing within any specific dimension or universe:

Q, (John DeLancie) : An immensely powerful extradimensional entity. While possessing near-godlike powers. Q also exhibits a childlike petulance and sense of playfulness

Moving down the canon spectrum, the TNG novel I, Q mentions another continuum (the M Continuum) which exists at a lower level of the same multiverse;

Per memory beta -

According to Q, the M Continuum appeared in existence after the Q continuum at the beginning of the multiverse. The M announced themselves as the enemies of the Q and confessed that they were part of the universe's attempt to provide balance to the Q realm. Their initial reason for hating the Q was "Because there's something about you that really pisses us off", but neither side could see that as an acceptable justification for aggressiveness on either side.

TV Canon

Q has demonstrated the ability to transcend multiple time-streams in the episode TNG: All Good Things where Picard inadvertently destroys the human race (through the creation of a temporal paradox). It also appears that the Q continuum itself exists outside the normal "multiverse" seen within the Star Trek universe with Quinn noting that the 'dusty road' (seen in VOY: Death Wish) leads to the universe.

Comic canon

This issue was discussed by Trek writer Mike Johnson after the appearance of Q in the new Star Trek timeline (in the ongoing comic serial "The Q Gambit"):

He's definitely the Q we know from The Next Generation, correct?

MJ: Indeed. The Q Continuum exists outside of the alternate timelines that our tiny flesh-brains occupy. Every Q is the same Q across all parallel realities, and this Q maintains both his fascination with and his contempt for the human species in particular.

Is this technically set before Q has met Picard and the others in TNG?

MJ: After. In this new story, Q has already had all of the adventures we've seen in the television series over the years, and he's aware that Spock Prime (Leonard Nimoy) traveled from the old timeline to the new one.

So does this mean there['s] a Q in the new-Trek universe, or is there only the one?

MJ: Maaaaaaybe.

In-Universe Reference texts

The Star Trek Encyclopedia directly refers to the Q as being extradimensional rather than existing within any specific dimension or universe:

Q, (John DeLancie) : An immensely powerful extradimensional entity. While possessing near-godlike powers. Q also exhibits a childlike petulance and sense of playfulness

The Q continuum seems to exist outside the normal "multiverse" seen within the Star Trek universe. Note that Q is capable of transcending multiple time-streams in the episode TNG: All Good Things where Picard inadvertently destroys the human race by creating a temporal paradox.

The Star Trek Encyclopedia directly refers to the Q as being extradimensional rather than existing within any specific dimension or universe:

Q, (John DeLancie) : An immensely powerful extradimensional entity. While possessing near-godlike powers. Q also exhibits a childlike petulance and sense of playfulness

Moving down the canon spectrum, the TNG novel I, Q mentions another continuum (the M Continuum) which exists at a lower level of the same multiverse;

Per memory beta -

According to Q, the M Continuum appeared in existence after the Q continuum at the beginning of the multiverse. The M announced themselves as the enemies of the Q and confessed that they were part of the universe's attempt to provide balance to the Q realm. Their initial reason for hating the Q was "Because there's something about you that really pisses us off", but neither side could see that as an acceptable justification for aggressiveness on either side.

The Q continuum seems to exist outside the normal "multiverse" seen within the Star Trek universe. Note that Q is capable of transcending multiple time-streams in the episode TNG: All Good Things where Picard inadvertently destroys the human race by creating a temporal paradox.

The Star Trek Encyclopedia directly refers to the Q as being extradimensional rather than existing within any specific dimension or universe:

Q, (John DeLancie) : An immensely powerful extradimensional entity. While possessing near-godlike powers. Q also exhibits a childlike petulance and sense of playfulness

Moving down the canon spectrum, the TNG novel I, Q mentions another continuum (the M Continuum) which exists at a lower level of the same multiverse;

Per memory beta -

According to Q, the M Continuum appeared in existence after the Q continuum at the beginning of the multiverse. The M announced themselves as the enemies of the Q and confessed that they were part of the universe's attempt to provide balance to the Q realm. Their initial reason for hating the Q was "Because there's something about you that really pisses us off", but neither side could see that as an acceptable justification for aggressiveness on either side.