Alternate reality casualties
Casualties in the alternate reality.

Civilian 
Casualties were occasionally sustained among civilians in the alternate reality.

2258
Over six billion Federation civilians killed in the destruction of .
Nero
Ayel
Unknown number of Romulan civilians killed in the destruction of the Narada.

2259
Approx. 42 killed in the Kelvin Memorial Archive bombing.
Unknown number of Earth civilians killed when the  crashed.

2263
Ambassador Spock dies on New Vulcan. 
On Altamid
Anderson Le/Manas
Jessica Wolff/Kalara
Krall dies above on Yorktown

Starfleet casualties 
Starfleet personnel in the alternate reality often had to place their lives in danger during the course of their duties, and many made the ultimate sacrifice.

Posts 
In alphabetical order by date.

USS Enterprise (NCC-1701) 
The following casualties served aboard the  while it was in service (2258 – 2263):

In addition to those listed below:
 Unknown number of  crewmen killed in the battle with the Narada. (2258)
 Unknown number of USS Enterprise crewmen killed. (2259)
 Unknown number of USS Enterprise crew killed during destruction of the starship. (2263)

Revivals

Other posts 
In addition to those listed below:
 Unknown number of  crewmen killed in the battle with the Narada. (2233)
 The entire crews of the , , , , , , , and  presumed KIA before the destruction of Vulcan. (2258)
 Unknown number of personnel stationed on the planet  who did not escape before its destruction. (2258)
 Unknown number (up to 42) of personnel at the Kelvin Memorial Archive killed in a bombing. (2259)
 The entire crew of the  and unknown number of Starfleet Headquarters personnel during the ship's crash. (2259)

External link 
 
Lists
 
Death