Key: Last Name, First Name - Book first appears in. Short summary.
Fang - Book 1. Hagrid's enormous, but friendly, boarhound.
Fat Friar - Book 1. The kindly, Hufflepuff ghost.
Fat Lady - Book 1. The portrait guarding the entrance to Gryffindor tower.
Fawkes - Book 2. Dumbledore's faithful pet phoenix.
Figg, Mrs. - Book 1. Person Harry always stayed with when Dudley went on excursions.
Filch, Argus - Book 1. Custodian of Hogwarts who wages war against dirty students and Peeves with his cat, Mrs. Norris.
Finch-Fletchly, Justin - Book 1. Hufflepuff boy who turned to stone in Book 2.
Finnigan, Mrs. - Book 4. Seamus' mother.
Finnigan, Seamus - Book 1. Fellow Gryffindor in Harry's class.
Firenze - Book 1. Centaur in the Forbidden Forest who warns Harry about Voldemort.
Flamel, Nicholas - Book 1. The only known maker of the Sorcerer's (Philosopher's) Stone.
Flamel, Perenelle - Book 1. Nicholas' wife (see above).
Fletcher, Mundungus - Book 2. In Book 2, he tries to hex Mr. Weasley. Dumbledore refers to him as one of "the old crowd".
Flint, Marcus - Book 1. Captain of Slytherin Quidditch team in first three books.
Flitwick, Professor - Book 1. Charms teacher at Hogwarts and head of Ravenclaw House.
Fluffy - Book 1. Hagrid's huge three-headed dog who guarded the Sorcerer's (Philosopher's) Stone in Book 1.
Fortescue, Florian - Book 3. Owner of Florian Fortescue's Ice Cream Parlor and expert on medieval witch burnings.
Fridwulfa - Book 4. Hagrid's mother. One of the few giants left in Europe.
Fubster, Colonel - Book 3. Retired army colonel who looks after Aunt Marge's dogs.
Fudge, Cornelius - Book 1. The Minster of Magic.