Killed by Bobby Singer

Beings killed by Bobby Singer.

Crossroad Demons

 * Female Crossroad Demon - Incinerated her human remains with a flamethrower.

Regular Demons

 * Two unnamed demons - Stabbed with the demon-killing knife during the Raid on Niveus Pharmaceuticals.
 * Sam Winchester imposter - Stabbed with the demon-killing knife.

Vengeful Spirit

 * Lara Coggins - Salt and burned her bones.

Leviathans

 * Chet - (permanently incapacitated) Decapitated with a machete and disposed of his head separate from his body.

Ōkami

 * Unnamed Okami - Shoved through a woodchipper.

Shapeshifters

 * Olivia's Father - Killed him during a hunt.

Zombies

 * Gerald Browder - Shot multiple times with the help of Sam and Dean.
 * Karen Singer - Shot in the head at her request after she was reanimated by Death and started becoming a zombie.
 * Reanimated residents of Sioux Falls - Killed along with Sam, Dean and Jody Mills.
 * Several Croatoan zombies - Shot during the Raid on Niveus Pharmaceuticals alongside Sam and Castiel.

Hunters

 * Rufus Turner - Stabbed while possessed by a Khan worm.

Regular Humans

 * Ed Singer - Shot in the head with a rifle.
 * Karen Singer - Mortally wounded Karen while she was possessed by a demon before the demon was ultimately exorcised.

Other

 * Tempter Demon - Killed by an alternate reality Bobby to save Castiel.