Damage numbers for all weapons
There is This Overwatch Damage Spreadsheet with numbers for most weapons and abilities.
In case the link goes down:
Genji
Shuriken |105 (35x3)
Swift Strike (Impact) |30
Bleed |29
Dragon blade |120
McCree
Peacekeeper |70
Fan Fire |420 (70x6)
Deadeye |100-OHKO; 50% = ~300
Pharah
Rocket Launcher |120
Splash |13-80 (up to 40 v self)
Concussive Blast |1
Barrage |~40/blast, Total = 2500+
Reaper
Hellfire Shotgun |Up to 140
Death Blossom |510 (~35x2/sec)
Soldier: 76
Heavy Pulse Rifle |17
Helix Rockets |120
Splash |13-80 (up to 40 v self)
Tracer
Pulse Pistol |6
Pulse Bomb |450
Bastion
Assault |20
Siege (turret) |15
Tank |190
Hanzo
Storm Bow |23-125
Sonic Arrow |23-125
Scatter Arrow |Up to 450
Dragonstrike |~43/tick
Junkrat
Frag Launcher |120 (40 v self)
Frag Splash |40-80
Concussion Mine |120
Steel Trap |80
Rip Tire |600
Total Mayhem |Up to 300
Mei
Blaster (channeled) |2.25 / ammo
Alt-Fire |75
Iceblock |150 Heal
Icewall |500 health/pillar
Blizzard |97 (3.88 x 25 ticks)
Torbjorn
Rivet Gun |55
Alt Fire |24-100
Forge Hammer |75
Turret |14
L3 Turret MIssiles |~70
Widowmaker
Widow's Kiss (auto) |13
Widow's Kiss (scoped) |20-80-150
Lucio
Sonic Amplifier |80 (20x4)
Knockback |25
Mercy
Caduceus Blaster |20
Caduceus Staff
Symmetra
Photon Projector |7
Average over 6s |13.5 dmg/shot or 100 DPS
Charged Shot |25-125
Sentry Turret |3 dmg/tick
Teleporter
Zenyatta
Orb of Destruction |45
Charged Orbs |175 (35x5)
Orb of Discord |N/A
Dva
Auto |24 (8x3)
Jet Booster |25
Sidearm |14
Self-Destruct |~100-1000
Reinhardt
Rocket Hammer |75
Fire Strike |100
Charge initial hit |50
Charge impact |300
Earthshatter |100
Roadhog
Scrap Gun |Up to 225
Mid Range Shot (Impact) |50
Mid Range Shot (Spread) |Up to 225
Chain Hook |30
Whole Hog |Theoretically 2500+
Winston
Tesla Cannon |~3/tick
100 rounds |294
Jump Pack |15-50
Primal Rage |40
Zarya
Particle Cannon |~3/unit of ammo
Explosive Charge |37
Graviton Surge |22 (2x11)