Eren Yeager (Attack on Titan) regenerating a destroyed hand.
Korosensei (Assassination Classroom) regenerates his tentacle.
Angel (Angel: After the Fall) regenerates his hands and feet after James ripped them off.
Alastir (Charmed) regrowing his arm.
Ulquiorra Cifer (Bleach) regenerating his arm.
Gerard Valkyrie (Bleach) using The Miracle to regrow his arm stronger than it was before.
Genji Ikusabe (Buso Renkin) regenerating his arm that was blown off.
Corma Limbs (Cirque Du Freak: The Vampire's Assistant) regrows an amputated arm.
Nero (Devil May Cry series) regrows his arm.
Saiyans like Son Goku (Dragon Ball) can easily regenerate their severed tails.
Piccolo (Dragon Ball) regenerates a new arm after injuring it.
Cell (Dragon Ball) regenerating even his head and torso...
Meta Cooler (Dragon Ball Z: The Return of Cooler) regenerating and reconstructing his left arm.
The Doctor (Doctor Who) using excess regeneration energy to regrow his severed hand.
Peter Griffin (Family Guy) regenerating his severed hand, and the hand regenerating into the evil Retep.
Claire Bennet (Heroes) slowly regrows a toe after cutting it off with scissors.
Claire Bennet (Heroes) regenerates her arm after being blown up with a grenade.
Wade Wilson/Deadpool (Marvel Comics) regenerates a lost hand.
Curt Connors' (Marvel Comics) Lizard Formula was originally created to enable him to regrow his lost arm.
Wade Wilson/Deadpool (Deadpool film) regenerating his severed hand, which initially appears in baby form.
Curt Connors (The Amazing Spider-Man) admiring his newly regenerated arm.
Aldrich Killian (Marvel Cinematic Universe) regenerating his severed arm.
Tohru (Miss Kobayashi's Dragon Maid) regularly cuts off her own tail to cook it...
Deoxys (Pokémon) regenerating the arm that it lost.
Greed (Fullmetal Alchemist) regenerating his severed arm.
Sesshomaru (Inuyasha) holds Bakusaiga in his newly-regenerated left arm.
Boros (One-Punch Man) regenerating his severed arm.
A "special" Paramecia, Charlotte Katakuri (One Piece) can actually change his body into mochi, akin to a Logia, and regrow his forearm.
Deacon Frost (Blade) regenerating his arm.
The Devastator (DC Comics) regrew his right arm after it was severed by Superman's heat vision.
Wade Eiling/The Shaggy Man (DC Comics)
Nik Mayak/Nightblade (DC Comics)
The Captain (Metal Gear Survive) was able to regenerate their left arm after it was severed by a wormhole.
Alucard (Hellsing) regenerates his arms.
Cinder Fall (RWBY) regenerating her Grimm arm.