Alistair (disambiguation)

Alistair (also spelled Alastair) is a given name that can refer to:
 * Alastair, a spider who lived in the cupboard under the stairs
 * Alistair Ballcocke, a wizard whose name was carved into a Divination classroom wall
 * Alistair Thaxted, a Hufflepuff student at Hogwarts in the 1990s

Behind the scenes
Real-world individuals with the given name Alistair (also spelled Alastair) include:
 * Alastair King, a composer who co-wrote the score to Harry Potter and the Half-Blood Prince (film)