Located at 129B Diagon Alley. Whizz Hard Books is a Wizarding book publisher. Its range of titles include the popular Quidditch Through the Ages and Hairy Snout, Human Heart.

Located at 93 Diagon Alley, it is a joke shop owned by George Weasley, ran by his younger brother Ron. It sells practical joke objects, such as Extendable Ears, a Reusable Hangman, and Fred and George's special WonderWitch products, such as love potions and ten-second pimple remover. There is also a section of Muggle magic tricks in honor of their father Arthur. They're not big sellers, but they do fairly well.

Twilfitt and Tatting's is a wizarding clothing shop located in Diagon Alley. Given that it is favored by elitist pure-blood witch Narcissa Malfoy, it is probably an upmarket shop.

Presumably where the Daily Prophet newspapers are printed.

A publishing house affiliated to the Ministry of Magic.

Located at 59 Diagon Alley, TerrorTours is presumably a travel agency for wizards and witches.

A shop that sells confections.

This is where students buy their potion ingredients.

A shop that sells secondhand robes.

A shop that sells ink and presumably other stationary items (quills, parchment).

A teashop located in Diagon Alley.

Its main products are things having to do with Quidditch such as Quaffles, Bludgers, and broomsticks. It's a competitor of Broomstix.

A shop that sells cauldrons.

Ollivander's Wand Shop is the sole wand shop of Diagon Alley. Peeling gold letters over the door of the shop read: Ollivanders: Makers of Fine Wands since 382 B.C. The shop's display consists of a solitary wand laying on a faded purple cushion in the dusty window. The shop is tiny, empty except for a single, spindly chair in the corner. Thousands of narrow boxes containing wands are piled right up to the ceiling of the tiny shop, and the whole place has a thin layer of dust about it.

Located at 18a Diagon Alley, Obscurus is a Wizarding book publisher. Its range of titles include the popular Fantastic Beasts and Where to Find Them.

One of the shops where students buy their pets and supplies.

Located at 275 Diagon Alley, this shop helps witches getting rid of "warts and worse".

Sometimes simply referred to as Madam Malkin's, it is a shop in Diagon Alley. Students get their Hogwarts school uniforms there, and also dress robes, traveling cloaks, and the like.

A shop that sells secondhand items such as broken wands, lopsided scales, etc.

Gringotts is the only known bank of the wizarding world. It was created by the goblin Gringott. It is located in Diagon Alley and is owned and run by Goblins. In addition to storing money and valuables for wizards, one can go there to exchange Muggle money for wizarding money.

Gambol and Japes Wizarding Joke Shop is located in Diagon Alley. Zonko's owned by George Weasley resides in Hogsmeade.

A popular bookshop in Diagon Alley where most Hogwarts students purchase their schoolbooks.

It was owned and operated by Florean Fortescue, and was located at Diagon Alley.

A pet shop located in Diagon Alley that sells owls and various other things needed for the care of owls, like Owl Treats. It sells a variety of breeds, including Screech, Barn, Tawny, Brown, and Snowy.

A shop that sells broomsticks and quidditch gear.

Brews and Stews was a hostel for travelling wizards in Diagon Alley located directly above Wiseacre's Wizarding Equipment, founded prior to 1598. The proprietrix of this establishment in the 1990s was Clutterbuck Crispe.

A shop in Diagon Alley that sells quills. It is next to Madam Malkin's Robes For All Occasions shop.