Happy Stamper
- Offers a wide selection of unmounted stamps and scrapbook supplies.
- http://www.happystamper.com/

Happystampers
- Offers a wide selection of products for stamping and scrapbooking.
- http://www.happystampers.co.uk/

Heartland Images
- Custom rubber stamps and original rubber stamp designs for stamping, scrapbooking, and use with polymer clay.
- http://www.heartland-images.com/

Halo's Rubber Stamps
- Hook and loop-based mounting system, and a line of unmounted stamps.
- http://www.halosrubberstamps.com/

Hot Potatoes
- Specializer in products for stamping on fabric, and instructions for heat embossing on velvet.
- http://www.hotpotatoes.com/

Hero Arts
- Offers sets and project kits for creative correspondence. Also ideas.
- http://www.heroarts.com/

Hanko Designs
- Source for Asian and Hawaiian rubber stamps, Japanese origami and washi papers, and Asian art supplies and accessories.
- http://hankodesigns.com/

Haika Rubber Stamps
- Unmounted stamps with a Pacific Northwest theme.
- http://www.haika.com/