All unique weapons in Fallout 4

In the following I will tell you all unique weapons and where you can find them in the vanilla game of Fallout 4. (Make sure you check out my Fallout 4 DLC unique weapon guide. ►Link◄)
I divide the weapons into five sections:
1. Ballistic weapons
2. Energy weapons
3. Heavy weapons
4. Melee weapons
5. Unarmed weapons

If you want detailed information about each weapon, Google is your friend.
Ok let's start...

1. Ballistic weapons

Deliverer - The Deliverer is a potential reward for completing the quest Tradecraft. (one of the first quests from the Railroad) Don't worry you don't have to side with them to get the weapon.
Eddie's Peace - Found during the quest Long Time Coming. (quest is given by Nick Valentine ► companion quest)
Justice - Sold by Penny in Covenant.
Kellogg's pistol - Found during the quest Reunions. (kill Kellogg obviously)
Le Fusil Terribles - Found in Libertalia on a shelf in the captain's cabin.
Overseer's Guardian - Sold by Alexis Combes in Vault 81.
Reba II - Potential reward for completing the quest Gun Run with Barney Rook. (you need to go to Rook family house to start the quest)
Reba - Dropped by Barney Rook. (this one has no legendary effect but it is indeed unique named)
Silver submachine gun - Reward for the quest The Silver Shroud. (standart submachine gun with a unique skin) To get the quest you have to listen to the Silver Shroud Radio near Goodneighbor.
Spray n' Pray - Sold by Cricket, a wandering caravan trader. (Cricket could be at many different locations. Try to catch her at Vault 81 or Bunker Hill)
The Gainer - Reward for solving the Vitale pumphouse number puzzle. (entrance to the pumphouse can be found just south of Hub City Auto Wreckers and east of Finch farm ► near the water)
Tinker Tom Special - Sold by Tinker Tom in the Railroad HQ.
Wastelander's Friend - Sold by Deb in Bunker Hill.

2. Energy weapons

Alien blaster pistol - Found in a random encounter (ever saw a crashing UFO? Yes, then go to UFO crash site and follow the green alien blood to an cave in which you will find the alien) The crash site is located east of Oberland station, northwest of Chestnut Hillock Reservoir or north of Vault 81.
Cryolator - In a locked case (Master) located in the Vault 111 overseer's office.
Experiment 18-A - Sold by the Synth requisition officer in the Institute. (you can only get this if you haven't blown up the Institut already)
Good Intentions - Carried by the Gunner leader Clint on the elevated freeway camp. (near the Quincy ruins)
Lorenzo's Artifact - Potential reward for completing the quest The Secret of Cabot House. (you only get this if you are always nice to Jack Cabot) To get this quest you first have to find Edward Deegan by visiting Bunker Hill, the The Third Rail in Goodneighbor, or the Dugout Inn in Diamond City. Then follow the Cabot questline to the end.
Old Faithful - Sold by Arturo Rodriguez in the Diamond City market.
Prototype UP77 "Limitless Potential" - In a hidden room, opened by a button in a locked safe (Master) inside the University Credit Union.
Righteous Authority - Reward for completing the quest Call to Arms. In order to get this quest, go to Cambridge Police Station and talk to Paladin Danse (you don't have to side with BoS to get this weapon)
Sentinel's Plasmacaster - Sold by Teagan on the Prydwen after reaching the rank of Sentinel in the Brotherhood of Steel.
Survivor's Special - Reward for completing the quest The Lost Patrol and convincing Paladin Brandis to return to the Brotherhood of Steel. (you also can steal the weapon from him before the quest ends) The quest is given by Paladin Danse or Lancer-Captain Kells.
The Last Minute - Sold by Ronnie Shaw at The Castle after completing the quest Old Guns. (join the Minutemen and do their questline until you get the quest Old Guns by Preston Garvey)
Virgil's rifle - Kill Virgil or steal it from him in Virgil's laboratory, using rank 3 of the Pickpocket perk. (he is located at the Glowing Sea and part of the main quest you can't miss him)
Wazer Wifle - The weapon is acquired after doing four unmarked quests for Shaun after ending the main quest with any faction. (you know find him a camera and so on)
Zeta gun - Found in the Cabot House on the science lab table or on Jack Cabot's body.

3. Heavy weapons

Ashmaker - Potential reward by convincing Bobbi No-Nose to leave peacefully or killing Bobbi for completing the quest The Big Dig. Otherwise if you kill Fahrenheit Ashmaker can be looted from her body. (quest given by Bobbi in Goodneighbor)
Big Boy - Sold by Arturo Rodriguez in the Diamond City market.
Broadsider - Reward for completing the quest Last Voyage of the U.S.S. Constitution by siding with Captain Ironsides.
Death From Above - Sold by Teagan on the Prydwen after reaching the rank of Paladin in the Brotherhood of Steel.
Final Judgment - Carried by Elder Maxson; available during Airship Down or Precipice of War or Rockets' Red Glare. (kill Elder Maxson during these quest)
Junk Jet - Located in ArcJet Systems rocket control room or dropped by Manta Man on death. (Manta Man is an random encounter who can be found after completing the quest The Silver Shroud)
Partystarter - Sold by KL-E-0 in Goodneighbor.

4. Melee weapons

2076 World Series baseball bat - Located in Jamaica Plain under the city hall. Found in the display on the right side of the Treasures exhibit.
Big Jim - Found in the sewer tunnel beneath Walden Pond.
General Chao's Revenge - Sold by Trudy at the Drumlin Diner.
Grognak's axe - Inside Hubris Comics, in a locked display case (Advanced), behind the front desk. (bring Cate with you if you don't have the required skill)
Kremvh's Tooth - Found underwater at the bottom of Dunwich Borers, on an altar in the side tunnel, near the bottom of the pool. (don't jump into the water in power armor, you will render the power armor frame irretrievable, as the only way out is to swim back up)
Pickman's Blade - Located in the Pickman Gallery in a locked safe behind a painting, reward for completing the quest Pickman's Gift is the key for the safe.
Reckoning - Sold by a level 4 workshop merchant. (well that sounds pretty easy right?)
Rockville Slugger - Sold by Moe Cronin in the Diamond City market.
Shem Drowne sword - Reward for completing the quest The Gilded Grasshopper. In order to get this quest you first have to rescue Nick Valentine. (part of the main quest) After you have done that a file about Marty Bullfinch will show up in Nick Valentine's office. Read this to start the quest.
Shishkebab - Saugus Ironworks. (by killing Slag) Reward for completing the quest Out of the Fire. To get this quest go to Finch farm an speak with Abraham Finch. To be honest the Shishkebab isn't a unique weapon, it's actually a really rare weapon.
Zao's sword - Earned as a reward from the quest Here There Be Monsters if successful in 3 speak checks. (this one has no legendary effect, but is unique named)

5. Unarmed weapons

There are actually no unique unarmed weapons in the base game of Fallout 4, but we have the Furious Power Fist which can be found on Swan's body at Swan's Pond. It is a guaranteed Furious Power Fist drop.

If this guide helped you out please leave a thumbs up. =)

[Mgnetik]

Thank you sm

[Rahg Roswellson]

There is a lack of information, we don't know the type of weapon (sniper rifle, smg, etc...) and the special effect.
We have to google every name until we find the weapon type we are looking for.

[Peflett]

where aeternus oh so no dlc

[BlackSans777TTV]

btw if you want A LOT of fusion cells (NOT FUSION CORES) you can get max commando and pray and spray on very hard institutue is a PUSHOVER (at least the ones that are quanitity instead of quallity

[𝔓𝔯𝔦𝔪𝔞𝔯𝔠𝔥]

Lol you didn't even mention what these weapons do...

[Vlofox]

thx bro

[more tren more men]

agreed

[th_toothboy]

you are right but I thought it's more an armor piece than an actual weapon

[❄]

thx! btw you forgot tessa's fist tho, a raider power armor right arm if i'm not mistaken?

[Psy]

thx dude, but how the f### do you get enough caps for the big boy?!