Alucard (アーカード, Ākādo?, alt. "Arucard") is a fictional character and the protagonist and antihero of the Hellsing manga and anime series created by Kouta Hirano. He is a vampire and is devoted entirely to the current head of the Hellsing family (Integra Hellsing during the timeline of the story) and good friends with Walter. He also feels admiration towards his fledgling, Seras Victoria. Alucard works with the Hellsing Organization against other vampires and evil forces. He fights with ferocity and often extreme cruelty, rarely killing until his target has been disabled and humiliated, while frequently allowing enemies more than one chance to kill him (though he seeks only to be killed by a human, having grown bored of immortality and life).

As revealed in volume 8 of the manga, he is Count Dracula ("Alucard" is "Dracula" spelled backwards). Soon after the events presented in Bram Stoker's original novel, Dracula was defeated by Abraham Van Helsing and became the family's loyal servant. Decades later, Abraham's descendant Arthur Hellsing gives the Count his current name: "Alucard". The manga is set over a hundred years later, where the Hellsing Organization is forced to fight the remnants of a Nazi battalion.

He typically dresses in a distinctive Victorian and western fashion, with a charcoal suit, leather riding boots, a red cravat, and a long red duster (resembling Van Helsing's duster). He also wears a red fedora with a wide, floppy brim which he uses to cover his long black shaggy hair, and a pair of circular, wire-framed sunglasses (which are similar in design to glacier sunglasses and old-fashioned Wilson welding glasses). However, this form seems to be a part of his being as he can change it at will.

In the anime (both the TV series and OVA) Alucard is voiced by Jouji Nakata and Crispin Freeman in the English adaptations.