Comics
- Gravity Falls: Lost Legends: Slenderman has a panel where he is hastily rummaging for his wallet to bid for Dipper and Pacifica.
- The Smile Men from The New Mutants, with their Eyeless Faces, slender limbs, and attacks on young people, resemble the Slenderman.
- Lost Girl: In SubterrFaenean, Chief Hamelin informs Bo he has gone by several titles in his day. Among them being Slenderman.
- Slenderman himself has a brief appearance in BoxxyQuest: The Gathering Storm. Interestingly, this time his arrival actually aids the protagonists, as he targets the villain first and keeps her busy long enough for the heroes to escape the forest they’re all lost in.
- Minecraft's Endermen are based on Slenderman.
- Burger Brawl: In Night Of Burgerween, the challenge involves not getting caught and killed by Slenderman.
- Minecraft Endventures: One of the Enderman triplets is named Slendy.
- A (not the, a) Slenderman cameos in My Property Isn't Normal, a series about a man living in an Eldritch Location at the behest of The Men in Black. Here, it wears animal skins instead of a business suit, and is quickly driven off when the protagonist cuts off one of its tentacles and then streaks at it.
- Stupid Kids: Slenderman is shown behind a tree for a moment in Hős Lovag Boti (Sir Boti Knight).
- Supermarioglitchy4's Super Mario 64 Bloopers: my best friend slenderman, as the title may suggests, introduces Slenderman as a friendly ally and since then he started appearing more as a minor character.
- TOMICA Thomas & Friends: In short 20, Topham Hatt mentions he is gonna dress up as Slenderman for the Halloween party, in the same episode Slender Engine makes its debut (a locomotive-d version of the original Slenderman). It made brief cameos in other episodes.
- American Dad!: In Enter Stanman, one of the caricatures of Stan in Francine's subconscious is just him with no face. Presumably, it is her seeing Stan as a faceless drone for working at the CIA, but Stan gets confused about what he represents and guesses that he is him as Slenderman.
- My Little Pony: Friendship Is Magic: In "Pinkie Apple Pie", a ponyfied version of Slenderman can be seen behind some shrubbery when Pinkie glomps Applejack.
