Incantation: Alohomora
Name: Not given
Effect: Charm to open locked doors
PS: C9 Pg119: Hermione uses it to open the door to the forbidden corridor so the trio can escape Filch

Name: Anti-Cheating Spell
Incantation: Not given
PS: C16 Pg191 Used on the exam quills

Incantation: Aparecium
Name: Not given
Effect: Reveals invisible ink
COS: C13 Pg174 Hermione uses this in an attempt to read Riddle's diary

Incantation: Avada Kedavra
Name: The Killing Curse
Effect: Instant death - protrudes a flash of green light
GOF: C14 Pg191 LOOK UP

Incantation: Avis
Name: Not given
Effect: Conjures a flock of birds
GOF: C18 Pg271 During the Weighing of the Wands, Mr. Ollivander cast this spell using Cedric's wand

Name: Babbling Curse
Incantation: Not given
Effect: Presumingly - babbling!
COS: C10 Pg122: Lockhart claims to have cured a Transylvanian villager of this

Name: Banishing Charm
Incantation: Not given
Effect: LOOK UP
Reverse: Summoning Charm [see Accio]
GOF: C26 Pg416 LOOK UP

Name: Bat-Bogey Hex
Incantation: Not given
Effect: LOOK UP
OOTP: C6 Pg94 LOOK UP