Stun

Stuns are a debuff effect that makes the target unable to do anything for a short duration of time. Stuns also interrupt channeled abilities.

Sleep is also considered a Stun effect and is affected by abilities and talents that interact with Stuns.

Basic Abilities

 * Anub'arak's "Burrow Charge" stuns enemies hit for 0.5 seconds.
 * Anub'arak's "Impale" stuns enemies hit for 1 second.
 * Auriel's "Detainment Strike" stuns the first enemy hero hit for 1.25 seconds if they collide with terrain.
 * Her level 13 talent, "Piercing Lash", allows "Detainment Strike" to hit all enemy heroes in its path.
 * Blaze's "Jet Propulsion" stuns the first enemy hero hit and nearby enemy heroes for 1.25 seconds.
 * The Butcher's "Ruthless Onslaught" stuns the target for 1 second upon impact.
 * Deathwing's "Earth Shatter" stuns enemies hit for 0.75 seconds.
 * Dehaka's "Drag" stuns and drags the first enemy hit for 1.75 seconds.
 * His level 7 talent, "Constriction", increases the duration of "Drag" to 2.25 seconds.
 * Diablo's "Shadow Charge" stuns the target for 1 second if it collides with the terrain.
 * Diablo's "Overpower" stuns the target for 0.25 seconds.
 * E.T.C.'s "Power Slide" stuns enemies hit for 1.25 seconds.
 * Gazlowe's "Xplodium Charge" stuns enemies hit for 1 seconds.
 * His level 20 talent "Bomb Toss" causes "Xplodium Charge" to launch two additional bombs when it detonates.
 * Garrosh's "Groundbreaker" stuns enemy heroes hit in the outer edge of the ability' area of effect for 0.75 seconds.
 * Garrosh's "Wrecking Ball" briefly stuns enemy thrown.
 * Hogger's "Staggering Blow" stuns all enemies hit for 0.75 seconds if they collide with terrain.
 * His level 16 talent, "Headbanger", increases the stun duration by 0.5 seconds.
 * Imperius's "Celestial Charge" stuns all enemy heroes hit for 1 second.
 * Johanna's "Condemn" stuns enemies hit for 0.25 seconds.
 * Kael'thas' "Gravity Lapse" stuns the first enemy hit for 1 second (3 enemies for 1.5 seconds if activated with "Verdant Spheres").
 * Kel'Thuzad's "Chains of Kel'Thuzad" stuns heroes hit for 0.5 seconds if the ability hits both targets.
 * Kerrigan's "Impaling Blades" stuns enemies hit for 1 second.
 * Mal'Ganis's "Fel Claws" stuns enemies hit by third slash for 0.75 seconds.
 * His level 7 talent, "Will of Tichondrius", increases the stun duration to 1 second if the first 2 slashes hit at least 4 enemy heroes.
 * Mei's "Blizzard" stuns enemies hit by the final pulse for 1.25 seconds.
 * Muradin's "Storm Bolt" stuns enemies hit for 1.25 seconds.
 * Qhira's "Revolving Sweep" stuns the first enemy hit for 0.25 seconds, and stuns for an additional 0.75 seconds if the skill is reactivated.
 * Ragnaros' "Molten Swing" stuns enemies hit for 1 second.
 * Rexxar's "Misha, Charge!" stuns enemies hit for 1.25 seconds.
 * Sonya's "Ancient Spear" briefly stuns enemies hit while Sonya is being pulled.
 * Stitches' "Hook" stuns enemies hit while they are being pulled.
 * Sylvanas' trait "Black Arrows" can be activated to temporarily stun Minions, Mercenaries and Structures for 3 seconds when they take damage from her.
 * Tyrande's "Lunar Flare" stuns enemies hit for 0.75 seconds.
 * Uther's "Hammer of Justice" stuns an enemy hero for 1 second.
 * Valeera's "Cheap Shot" stuns the target for 0.75 seconds.
 * Yrel's "Righteous Hammer" stuns enemies hit for 0.75 seconds at the ability's maximum charge.

Heroic Abilities

 * Cassia's level 10 heroic ability, "Valkyrie", briefly stuns enemies hit while they are being pulled and stuns them for 0.5 seconds at the end of her path.
 * Cho's level 10 heroic ability, "Hammer of Twilight", stuns enemies hit for 0.75 seconds.
 * Diablo's level 10 heroic ability, "Apocalypse", stuns enemies hit for 1.75 seconds.
 * D.Va's level 10 heroic ability, "Bunny Hop", stuns enemies for 0.5 seconds after hitting them 4 times.
 * E.T.C.'s level 10 heroic ability, "Mosh Pit", makes him channel to stun nearby enemies for up to 4 seconds.
 * His level 20 talent, "Tour Bus", allows E.T.C. to use "Powerslide" during "Mosh Pit", which increases its duration by 2 seconds.
 * His level 20 talent, "Death Metal", creates a ghost that casts "Mosh Pit" when E.T.C dies.
 * Gazlowe's level 10 heroic ability, "Grav-O-Bomb 3000", stuns enemies hit for 0.5 seconds.
 * Hanzo's level 10 heroic ability, "Dragon's Arrow", stuns enemies hit for 0.5 seconds, 1.25 seconds or 2 seconds depending on distance traveled.
 * Hogger's level 10 heroic ability, "Shockwave", stuns enemies near him for 1.25 seconds and enemies caught in the shockwave for 0.75 seconds.
 * Illidan's level 10 heroic ability, "The Hunt", stuns the target for 1 second upon impact.
 * Imperius's level 10 heroic ability, "Wrath of the Angiris", stuns the target for 1 second upon impact.
 * Johanna's level 10 heroic ability, "Blessed Shield", stuns the first enemy hit for 1.5 seconds, bouncing to 2 nearby enemies stunning them for 0.75 seconds.
 * Her level 20 talent, "Radiating Faith", increases the stun duration of "Blessed Shield" by 33%, and hits 2 additional enemies.
 * Mei's level 10 heroic ability, "Avalanche", stuns enemies for 0.5 seconds per hero consumed after the snowball ends.
 * Johanna's level 10 heroic ability, "Falling Sword", stuns enemies hit for 0.2 seconds.
 * Muradin's level 10 heroic ability, "Haymaker", briefly stuns the target.
 * Murky's level 10 heroic ability, "Octo-Grab", makes him channel to stun an enemy hero for up to 3 seconds.
 * Ragnaros' level 10 heroic ability, "Sulfuras Smash", stuns enemies hit in the center for 0.5 seconds.
 * His level 20 talent, "Flames of Sulfuron", increases the stun duration of "Sulfuras Smash" to 1 second.
 * Sonya's level 10 heroic ability, "Leap", stuns enemies hit for 1.25 seconds.
 * Stukov's level 10 heroic ability, "Massive Shove", stuns the enemy hero hit for 0.5 seconds as they collide with the terrain.
 * Tassadar's level 10 heroic ability, "Black Hole", stuns enemies hit by the center for 1.25 seconds.
 * Thrall's level 10 heroic ability, "Sundering", stuns enemies hit for 1 second.
 * Tyrael's level 10 heroic ability, "Judgement", stuns the target for 1.5 seconds upon impact.
 * Uther's level 10 heroic ability, "Divine Storm", stuns nearby enemies for 1.75 seconds.
 * Valla's level 10 heroic ability, "Rain of Vengeance", stuns enemies hit for 0.5 seconds.
 * Destroying Lt. Morales' Medivac stuns its passengers for 0.5 seconds.
 * Destroying The Lost Vikings' boat when "Longboat Raid!" is active stuns them for 1 second.

Talents

 * Deckard's level 16 "Horadric Staff" makes his next basic attack every 5 seconds stun heroes for 0.75 seconds.
 * Diablo's level 20 "Hellgate" stuns enemies hit for 1.75 seconds.
 * D.Va's level 7 talent, "Hit the Nitrous", adds an addition effect to her "Boosters" ability, stunning enemies hit by the first 0.5 seconds of the ability for 0.5 seconds.
 * Gall's level 16 "Leaden Orb" adds an additional effect to his "Dread Orb" ability, stunning enemies hit for 1 second.
 * Garrosh's level 16 "Earthshaker", adds an additional effect to his "Wrecking Ball" ability, stunning enemies in its target area of effect for 0.75 seconds.
 * Hanzo's level 20 "Bullseye" adds an additional effect to his "Sonic Arrow" ability, stunning enemy Heroes hit for 1 second.
 * Lúcio's level 13 "Heavy Casters" changes "Push Off" to stun enemies for 0.5 seconds instead of slowing them by 75% for 1 second.
 * Muradin's level 7 "Skullcracker" makes every 3rd basic attack against the same target stun it for 0.25 seconds.
 * The Lost Vikings' level 16 "Large and in Charge" makes Olaf's charge stun the target for 1 second.

Non-Heroic abilities

 * Both neutral and in-lane Bone Golems, Grave Golems, Sand Golems, as well as neutral Garden Terrors' ability "Mega Smash" stuns enemies in its area of effect for 2 seconds.
 * Immortal's ability "Angelic/Demonic Explosions" stuns enemies after a delay in several small circular areas around them for 2 seconds.
 * Immortal's ability "Angelic/Demonic Cleave" knocks enemies back enemies in its area of effect and then stuns them for 0.5 seconds.
 * Mega Enforcer's ability "Capture" stuns target hero for 1 second and then places them in stasis.
 * Punisher's ability "Punish" stuns enemies its area of effect for 1 seconds.

Counter Abilities

 * Becoming either Unstoppable, Invulnerable or entering Stasis cancels all stun effects and makes the hero immune to stuns for their duration.
 * Alexstrasza's trait, "Dragonqueen", reduces the duration of stuns by 50% when in the dragon form.
 * Ana's level 13 talent, "Smelling Salts", adds an additional effect to her "Healing Dart" ability, removing stuns from allies hit by it.
 * Arthas' level 7 talent, "Icebound Fortitude", reduces the duration of stuns by 75% for 3 seconds.
 * Brightwing's trait, "Soothing Mist", removes stuns from nearby allied heroes.
 * Chen's level 7 talent, "Purifying Brew", adds an additional effect to his "Fortifying Brew" trait, reducing the duration of a stun by 75% once every 15 seconds.
 * Gall's trait, "Ogre Rage", makes him permanently immune to stuns.
 * Lunara's level 13 talent, "Abolish Magic", removes stuns from a target ally.
 * Malfurion's level "Nature's Cure", removes stuns from allies affected by his "Regrowth" ability.
 * Sonya's level 10 heroic ability, "Wrath of the Berserker", reduces the duration of stuns by 50% while in Berserker form.
 * Tyrande's level 4 talent, "Celestial Attunement", adds an additional effect to her "Light of Elune" ability, removing stuns from targeted allies.
 * Zarya's level 16 talent, "Cleansing Shield", adds an additional effect to her "Shield Ally" ability, removing stuns from the targeted ally.