S
- S M Arnold Inc
- Safari
- Sandtastik
- Sara Jordan Publishing
- Sargent Art Inc.
- Saunders
- Scene A Rama - Woodland Scenics
- Scholastic Books (trade)
- Scholastic Teaching Resources
- School Rite
- School Zone Publishing
- Schylling Toys
- Scientific Explorer
- Scratch-art Company Inc.
- Seat Sack
- See N Read Reading Tools
- Set Enterprises Inc.
- Shapes Etc.
- Shell Education
- Si Manufacturing Limited
- Silver Lead Co / Sandylion Products
- Skool Plus
- Small World Toys
- Smart Monkey
- Solution Tree
- Splash Guard, LLC
- Stages Learning Materials
- Steffy Wood Products
- Sterling Publishing Co Inc
- Stokes Publishing Co.
- Successful Kids Inc
- Suntex International



