"He's dead, Jim": Which Star Trek characters have returned from the dead?

Question

Among the recurring themes in Star Trek seems to be the alleged death of a character, who is later brought back to life.

It seems like this happens to a lot of major characters, though I cannot clearly recollect them all now. Which characters have either died, been pronounced dead, or were otherwise believed dead, only to later return?

For the purpose of this question copies of the allegedly deceased from alternate realities/timelines count but holograms of them do not (e.g. Kes didn't come back to life). All Star Trek films and series count. Some characters allegedly died, more than once I think. Might be worth noting.

Here are the ones I can think of offhand:

• Spock - died at least once at the end of the 2nd Star Trek movie; resurrected via fal-tor-pan
• Kirk - believed dead after falling into the Nexus, brought back by Picard and killed shortly later; I'm 99% sure he died and came back a few times prior to this
• Harry Kim - replaced by a copy of himself from an alternate reality that had branched off minutes/hours earlier
• Neelix - brought back to life after 18 hours of death, Neelix was saved by injections of Borg nanoprobes
• Dr. McCoy - Impaled by a Knight's lance. He got better.
• Scotty - believed dead, but he was actually hiding in a transporter buffer.

I'm sure Picard should be on the list but I can't remember the specific details (assimilation doesn't count).

Answer 1

The Original Series

Lt. Commander Benjamin Finney

Supposedly killed during an ion storm the the Star Trek TOS episode Courtmartial. In fact, survived and hid on Enterprise during whole trial.

Kodos

Presumed dead 2246, actually masquerading as Anton Karidian. Discovered in 2266.
See Star Trek TOS episode The Conscience of the King

Spock

• Died at least once at the end of Star Trek II: The Wrath of Kahn; resurrected via fal-tor-pan.
• May have died in “Return to Tomorrow”.

Kirk

Believed dead after falling into the Nexus, brought back by Picard and killed shortly later.

Spock "killed" Kirk twice in the original series:

• In The Enterprise Incident, Spock used a "Vulcan death grip" to fool the Roumulans into believing he had killed Kirk.
• In Amok Time, Spock believed he actually killed Kirk during a battle to the death, though it was just a trick played by McCoy.

Also in the original series, Kirk was MIA and officially declared dead while he was lost in "interspace" in The Tholian Web.

Kirk died saving the Enterprise in Star Trek Into Darkness. He was revived by an injection of Khan's blood.

Dr. McCoy

Impaled by a Knight's lance in “Shore Leave”. He got better.

Scotty

• Believed dead, but he was actually hiding in a transporter buffer.
• He was killed (and then repaired) by Nomad in "The Changeling".

Chekov

Shot in a gunfight in “Spectre of the Gun”. It was only an illusion.

The Next Generation

Data

Thought to be dead but actually just kidnapped and his death faked by the kidnapper.

Presumed dead and subsequently buried by silly locals in "To Thine Own Self" actually just needed to be switched on.

Geordi LaForge

Presumed dead but actually just "out of phase" with everything except the floors of the Enterprise.

Ro Laren

Presumed dead but actually just "out of phase" with everything except the floors of the Enterprise.

Tasha Yar

Killed by a black ooze (Skin of Evil), then brought back to life by an alteration in the time line (Yesterday's Enterprise). Survived the putting of the timeline back to normal (evidence of this in Redemption).

Yareena

In the first season episode "Code of Honor" of Star Trek: The Next Generation, Yareena gets killed after a fight, but is revived on the Enterprise.

Worf

In the first season episode "Hide and Q" he is stabbed to death with a bayonet by one of the alien creatures conjured by Q. He is brought back to life with the power of the Q by William Riker.

Worf also dies in the TNG episode "Ethics". Worf breaks his back at the start of the episode, and undergoes an experimental procedure that results in him dying. After several minutes, Worf's "backup" biological functions end up reviving him.

Wesley Crusher

In the first season episode "Hide and Q" he is also stabbed to death with a bayonet after rushing to aid Worf. He is brought back to life with the power of the Q by William Riker.

Deep Space 9

Miles O'Brien

Miles O'Brien has been replaced by future self in the episode "Visionary" after dying because of the contamination.

Additionally, O'Brien's death was faked by T'Lani and Kellerun ambassadors in "Armageddon Game", but ultimately he was found alive and rescued, along with Dr. Bashir (see below).

Dr. Julian Bashir

Dr. Bashir's death was faked by T'Lani and Kellerun ambassadors in "Armageddon Game", but ultimately he was found alive and rescued, along with Miles O'Brien (see above).

Morn

Morn fakes his own death in “Who Mourns for Morn”, and turns up alive at the end of the episode.

Voyager

Janeway

In the third season episode "Coda" of Star Trek: Voyager, Captain Janeway is brought back to life by Chakotay after crash landing with a shuttle.

Harry Kim

Replaced by a copy of himself from an alternate reality that had branched off minutes/hours earlier.
He also really died in "Emanations" (Season 1), brought back to life shortly after.

Naomi Wildman

Like Harry, a copy of her from a recently deviated reality replaced her dead self in the main reality.

Neelix

Brought back to life after 18 hours of death, Mr. Neelix was saved by injections of Borg nanoprobes.

Ensign Lyndsay Ballard / Jhet'leya

In "Ashes to Ashes" (Season 6), we learn that Ensign Lyndsay Ballard, who had died, was resurrected by the Kobali.

Enterprise

Jonathan Archer

When the Enterprise reached Azati Prime (Azati Prime) Captain Jonathan Archer chose to undertake a suicide mission in order to complete the Xindi mission. T'Pol's emotional reaction toward Archer's departure and presumed death incapacitated her as a commanding officer (ending up with crying and an attempt to recover him).

Crewman Daniels

Apparently disintegrated by Silik in "Cold Front" (ENT 1x11), his appearances in later episodes were likely due to temporal manipulation or advanced technology.

Footnotes

The entire crew of Voyager, except for Chakotay and Kim

The Voyager crashed into an ice planet on the edge of the Alpha quadrant, while Kim and Chakotay in the Delta Flyer got back to Earth. 15 years later, Chakotay managed to send a message to Seven of Nine's implants to warn them of the crash before it happened.

Dinosaurs

The Voyager crew discovered that dinosaurs were actually not extinct, but had become a highly evolved, technological, race living in the Delta quadrant, whose sophistication was limited only by indoctrination of their society by those in power as a means of protecting their grip on power.

The entire complement of The Enterprise-D

The Enterprise was destroyed with all hands, repeatedly, in TNG: Cause and Effect. Then, it wasn't destroyed for a while.

The entire population of Earth in the 22nd Century

In the original timeline of "Twilight" (ENT 3x08), the Xindi superweapon attack succeeded, destroying Earth in a matter of seconds. Everyone on Earth died, presumably including named characters such as Admiral Forrest. A number of series regulars died in a later battle. A change to the timeline prevented all of these deaths.

All Earth-descended life (and likely all life in Earth's quadrant of the galaxy)

The anomaly in "All Good Things..." (TNG 7x25/26) prevented life from developing on Earth. Since the anomaly encompassed Earth's quadrant of the galaxy, it likely also interfered with the development of life on other worlds.

Answer 2

Worf also died if I'm not mistaken in TNG by a being who was evolving into pure energy. His neck was broke when energy from the humanoid pushed him off the platform to a lower level in a roundabout cargo bay. He was healed and brought back to life by the same humanoid.