Lightning damage

Lightning damage is one of the five damage types and is one of the three types that count as elemental damage.

Landing a critical strike with a skill that deals lightning damage inflicts the shock status ailment.

Lightning damage is mitigated by lightning resistance and reduction to lightning damage taken. Skills which deal or affect lightning damage have the "Lightning" gem tag. Some effects convert other types of damage into lightning.

Skill gems
A list of gems with the gem tag: Lightning

Base items
The following base items are related to lightning damage:

Flat added Lightning Damage
Unique items that add a flat amount of lightning damage or grant to socketed skills.

Increased Lightning Damage
Unique items that increase or reduce lightning damage by a percentage.

Converted to Lightning Damage
Unique items that convert damage to lightning damage.

Added as Lightning Damage
Unique items that add a portion of other damage types as lightning damage.

Damage taken as Lightning Damage
Unique items that convert damage taken to lightning damage.

Add a percentage of lightning damage as another damage type
Unique items that add a percentage of the lightning damage as another damage type.

Converted to another damage type
Unique items that convert lightning damage to another damage type.

Passive skills
There are passive skills that grant lightning damage bonuses.

Lightning damage
These passive skills grant increased lightning damage.

Lightning damage with weapons
These passive skills grant increased lightning damage with weapons.

Cluster Jewel passive skills
The following Cluster Jewel passives are related to Lightning Damage:

Miscellany
These passive skills are related to fire damage, but do not fit into any other category.

Timeless Jewel keystone passive skills
The following keystone passive skills are related to lightning damage:

Keystone passive skills
The following keystone passive skills are related to lightning damage:

Ascendancy passive skills
The following Ascendancy passive skills are related to lightning damage:

Monsters
Monsters which deal lightning damage include:
 * Some Skeletons, Blackguards, some Goatmen, some Miscreations, Galvanic Ribbon, some Skeletal Archers, some Skeletal Mages, some Spitters, some Undyings

Bosses which deal lightning damage include:
 * Kuduku, the False God
 * Ungulath‎ (cast )
 * Amarissa, Daughter of Merveil
 * Fidelitis, the Mourning
 * Targa, Beast Poacher (Uses, casts )
 * Vaal Oversoul (Lightning Beam)
 * Marceus the Defaced
 * The Voltaic Seal
 * Banner of Action ( aura)
 * Spinecrack
 * Piety of Theopolis (Lightning Ball, Lightning Storm,, )
 * Caliga, Imperatrix
 * Compulsor Octavia Sparkfist (Spark Spell Totem, )
 * Dominus, High Templar (Lightning Stream, Lightning Fist)
 * Shavronne of Umbra (, (Alt Art), (Alt Art), (Alt Art), Lightning Thorns Aura)