Top 10 Best Team Fortress 2 Sniper Weapons

Huntsman

~Hayzze
The Huntsman is the main alternative to the Sniper Rifle, offering a unique playstyle while retaining some similarities. Like the Sniper Rifle, it can headshot and charge, but it has no damage falloff. However, it differs in several key ways. It has a maximum damage of -90 compared to the Sniper Rifle, but this trade-off comes with increased mobility while charging and a faster charge rate.
Additionally, the Huntsman lacks a scope but allows for headshots without one, providing better situational awareness while charging. It fires a slower, more visible projectile instead of a bullet, which is harder to aim for headshots but easier for body shots. A few unique gimmicks include arrows that can be lit on fire for afterburn damage, and arrows that can be reflected by an airblast or destroyed by the Short Circuit, though this is difficult to do.
The Huntsman has only 13 rounds of ammunition instead of 25. An added cosmetic feature is that it places arrows in your rifle case. While it is an equal, preferential choice to the Sniper Rifle in regular gameplay, it is one of the best weapons in Medieval Mode. The Huntsman also boasts the best taunt kill in the game - very fast and stunning the enemy. Additionally, it pins enemies to walls upon death.

Hitman's Heatmaker

I use this weapon, and if you are good at getting headshots, your focus will fill up, allowing it to charge quicker for more headshots. Plus, the focus doesn't go down if you don't land a headshot.

I have trouble with the Sniper, but this rifle is what gets me from third to first place each match. It was what sparked my interest in the Sniper.

Getting 6 headshots in a row is fun... but getting 6 headshots in a row with exploding heads that deal even more damage is the best thing ever!

Jarate

This is the most terrifying weapon in the game, except for its far superior derivative, the Sydney Sleeper, or its somewhat equivalent counterparts for other classes, such as the Fan O' War and the Buff Banner. These weapons either cause all attacks by your team (nearby teammates) to deal more damage or make all attacks dealt to a specific, unfortunate enemy deal more damage (like Zenyatta's "Orb of Discord" from Overwatch).
The Sydney Sleeper combines Jarate with the Sniper Rifle. It looks like an air-powered dart gun and puts darts in your breast pocket, which looks awesome. Its stats match those of the Sniper Rifle, but it cannot deal headshots. It also shares Jarate's stats but doesn't extinguish fire, lacks infinite ammo that recharges, and doesn't function like a grenade. This might seem like a downside, but in reality, two of the best Sniper weapons have been merged into one with slightly weaker stats for each. Pretty amazing, in my opinion.

Sniper Rifle

The stock sniper is a good choice, but I honestly like the Huntsman and Hitman's Heatmaker better.

It does what a sniper needs, and it does it without gimmicks. It's reliable, and it kills.

Night Owl, Shot in the Dark, Awper Hand - It doesn't matter. This all-rounder is good for any type of combat. A jack-of-all-trades sniper rifle and one of my favorites.

Machina

This weapon is AWESOME, especially for sniping sentries and slower targets. If you're good enough, you can kill a Heavy-Medic duo in ONE SHOT. Here's a good Machina strategy (best on CTF):
Primary: The Machina
Secondary: SMG
Melee: Kukri
If the enemy team has lots of sentries, find a spot where you can snipe them while staying out of range. If Spies try to attack you, use your Kukri. If someone other than a Spy gets too close, use your SMG. Keep sniping the sentries until they're all gone. Usually, go for the Sentry first, then the Engineer. DO NOT go in and capture the flag yourself - let your stronger and faster teammates like Scouts, Soldiers, and Heavies do that for you.
(My final score with this setup was 109, my best ever.)

AWPer Hand

It's just awesome, and it's really OP.

Cozy Camper

20% damage vulnerability. So what? Snipers are usually away from combat, and if they are in combat, they would most likely die anyway. This weapon lets you regenerate 1 health every second, and there's no flinching while aiming. A wonderful secondary weapon.

Darwin's Danger Shield

More health? Perfect! Bullet resistance? Even better! Who cares about taking more damage from explosives? They are slow and easy to dodge.

R.I.P. to every Spy who was unfortunate enough to go up against someone using this.

It's really awesome how it can block one headshot.

Tribalman's Shiv

So what if it does more damage? You still use the normal one because it is faster. However, this is pretty OP in terms of spy-checking, but we have the Razorback for that (yes, I am a noob). So, bye-bye!

Razorback

A lot of people don't like this weapon, but if you find yourself on a server with its fair share of spies camping on your team's snipers, it helps a lot.

?

Shooting Star

Hang on. Why is this one getting no attention?

?

Fortified Compound

A nice reskin of the Huntsman, with new metal details. Plus, the time you can hold an arrow while still being on point seems to be extended.

Submachine Gun

It's like a mini-gun with a lot less spin-up and normal movement speed. How good is that?

Bazaar Bargain

I've never seen any bad Bazaar Bargain snipers. They always end up demolishing the entire server without mercy. Wherever you peek your head, he'll be there, hiding his sniper dot perfectly.

A pretty minor trade-off that gets mitigated by how good your aim is.

This weapon is good if you are a skilled sniper. If not, then this weapon might not be the best choice.

Sydney Sleeper

Amazing. A sniper weapon that has Jarate. Cover your enemies with Jarate, one by one, along with damage, and your teammates will kill them. Too bad you can't headshot with this rifle.

The Sydney Sleeper is brilliant for players who are starting off because it really supports your team, and you don't need to land headshots. If you can shoot someone with this and score a couple more low-charge shots, they are dead very quickly because of the Jarate effect.

This is a very good sniper support weapon. It gives mini-crits to your team, and you can do more damage on a Jarate backstab than with a headshot.

Bushwacka

This weapon turns mini-crits into full crits, eh? And Jarate applies mini-crits to the target - interesting. It's so obvious this weapon was made to be used with Jarate. When used together, it hits a target for around 150 damage. Who cares about the 20% damage vulnerability?
I can't count the number of times a Scout, Spy, etc., has come at me, and I just throw this jar of piss and then swing this awesome jagged blade. Even Pyros sometimes fall to this Kukri's wrath. It's music to my ears when the Sniper says, Bombs away! or Jaaarate! and I just swing this Kukri. Honestly, it's my favorite Sniper melee weapon.

There are still random critical hits, and mini-crits will turn into crits! This weapon is great with Jarate.
If a Pyro ambushes you, you're probably going to die anyway. If you do survive, you can use Jarate to extinguish the fire. So, no worries about the 20% fire damage vulnerability.

Classic

People always say that this is a terrible weapon, but the no-scope function is very useful. As a sniper, it's important to always be able to see the entire battlefield. If you know how to use it, it'll always be charged.

It's the best, other than the Fortified Compound. First, it is the coolest gun for Sniper other than the Machina. It has a laser sight too.

You can actually charge while you're not zoomed in, so Spies have less chance of sneaking behind you.

Cleaner's Carbine

Same as the normal SMG, but it gives you crits. Still, there are better choices.

Shahanshah

You deal more damage if you have low health! You'll likely be taking a lot of damage if you are using your primary weapon, so this weapon is quite good in combat.

Okay, if you are taking a lot of damage as a Sniper, you are doing something wrong.