Caitlyn

Hope to god she isn't very good and doe not utilize her 650 range against you. do not fight yourself and allow your support to poke down, and pray for a gank. Late game you should be able to cheese her in a bush by her red, but do not go to aggro in laning unless your support gets them below 40 for the DH proc, or you get love from your jungler.

Zyra

Ultimate counter to Teemo, her plants pop your shrooms and shrooms late game are a big chunk of your damage. In teamfights, try to throw your shrooms into a minion wave they're standing in to chunk them out.

Ezreal

"Skill shot" reliant AD. Although with the hitbox on a lot of his stuff, not much skill needed. Because most Ezs you'll see do not auto a lot, and most their damage is from their ability combo, Ezreal counters Teemo. Use your w to try to dodge skillshots and do not get poked down by this guy.

Yasuo

A lot of Teemos struggle in this matchup, but as long as you can space yourself from minions when he dashes and dodge the tornado, you should be good. Just be mindful of the windwall, he can block all of your abilities, so be careful when positioning yourself around the wind wall.

Lucian

It sort of a skill match-up. Normally Lucian dashes in and procs his passive on you but as long as you Q he shouldn't be able to get his press the attack off and you can weave in a few autos yourself.

Swain

Kai'Sa

Killable, but she doesn't auto as much as some other ADs so could get the upper hand.

Jhin

Miss Fortune

Twitch

Just don't allow him to sneak up on you.

Sivir

If she wastes her spell shield on your Q, let your support lock her down.

Jinx

Just got to watch out for her traps and zap, have a teammate lock her down and its a easy 300g.

Ashe

Kog'Maw

Tristana

Kalista

Draven

Vayne

Vayne isn't really able to kill you so long as you don't stand near walls. If you Q as she condemns you though, she should be blinded for the duration of the stun and you can W out mostly undamaged. you both scale, so even if you farm out the early game, you can still kill her late game.