My Little Red Wagon
- Sells toys, trains and dolls. A large selection of Thomas the Tank items.
- http://www.mylittleredwagon.com/

Mulberry Bush Ltd
- Includes bath and outdoor toys, stuffed animals, puzzles, and games.
- http://www.mulberrybush.co.uk/

My Very Own House
- Collapsible, easy-to-store cardboard house that unfolds to a large activity center for children.
- http://www.myveryownhouse.com/playhouse/

MyToyBox, LLC
- Featuring wooden trains sets and tables, dolls, plush toys, and videos.
- http://www.mytoybox.com/

Mitchell's Collectibles
- Pogo sticks, mini bikes, skateboards, action figures, beanies and tag protectors and sports collectibles.
- http://www.mitchellscollectibles.com/

MXToys
- Offering Hot Wheels, action figures, Supercross, Motocross, Freestyle, and model kits.
- http://www.mxtoys.com/

Mypolkadots
- Focusing on children 1 to 6 in the categories of pretend play, music, art, active play, blocks, manipulatives, bath fun, early learning, puzzles and games.
- http://www.mypolkadots.com

Mark Bergin Toys
- Offering an assortment of space, robot and super-hero toys. Also buying and selling rare and unusual toys for the serious collector.
- http://www.bergintoys.com/

MyComicShop.com
- Offering comics, games, and collectibles.
- http://www.mycomicshop.com/

Mr. Toys
- Outside toys such as pedal cars, swing sets, bikes, see saws and motorcycles. Also toy pianos.
- http://www.mrtoys.com/

Mattel
- Search and shop for toys, software, and video games by this popular US toy manufacturer.
- http://www.mattel.com/

Mail Order Express Toy Store
- Popular toys, games & puzzles, plus many unusual items. Wooden, pre-school and activity toys are the speciality.
- http://www.mailorderexpress.com

Magical Child
- Magic Child - Your Corner Toy Store on the internet, educational toys, help in finding the right toy.
- http://www.magical-child.com