Suicide was the deliberate termination of one's life by one's own hand. Sentient beings committed suicide for a number of reasons. It could be brought about by the mental status of a person or by extraneous circumstances, such as cultural demands or military directives.
Suicide teeth or poisonous pills were used by some military personnel to commit suicide and prevent capture by the enemy.
Rather than live with a crippling injury, Tusken Raiders would commit suicide when they lost a limb, or as the result of a wound, lost use of a limb.[1]
Xanatos, a former Padawan of Qui-Gon Jinn, committed suicide in 44 BBY, preferring to jump into a pool of acid rather than facing capture by his former master.
The Father on Mortis stabbed himself in order to weaken the Son, who had fallen to the dark side.
Clone Trooper Hardcase killed himself when he threw a detached missile pod from his hijacked Umbaran starfighter to destroy the reactor of the Separatist supply ship when the reactor shields were activated.
Following a misdirected raid against a suspected Jedi survivor and the earlier death of his squadmate Bry, IC-4447, known as Ennen, shot himself in the head with his sidearm.
Ko Sai committed suicide by hanging herself rather than help clone renegades reverse the clones' accelerated aging.
Darth Vader in 19 BBY attempted to commit suicide as a means to atone for his sins during the Atoan insurgency by collapsing a building on himself, Garoche Tarkin, and Saro. He ended up surviving.
Earlier, CaptainShale attempted to take Vader down with him with explosives.
Gira, a Jedi Knight, ran himself through with his own lightsaber after being tricked into betraying the Padawans in his care by Darth Vader.
In the same year that the Battle of Yavin took place, Bria Tharen committed suicide by taking a poison pill rather than facing capture or execution at the hands of the Imperials that had surrounded her unit.
After witnessing the destruction of Supreme OverlordShimrra Jamaane's vessel, Nas Choka gave permission for those Yuuzhan Vong who wished to commit suicide to do so. A large number of Yuuzhan Vong committed suicide, some by opening themselves with coufees, others by turning the ships they were flying into living missiles.
At fourteen, Danalis committed suicide in an airlock after realizing Captain Shrike would never live up to his promise to fix her vrelt-gnawed face.
George R. Binks had attempted to kill himself after being overcome with emotions at his wife and son, Jar Jar, although the attempt had failed after awaking a few hours later after a shot to the head left him unconscious.