| Ladderback Design (Baltimore, MD) |
| Lakonic (Chicago, IL) |
| Landor Brand Consulting and Design (Worldwide) |
| Large Design Ltd (London, UK. Copenhagen, Denmark) |
| Larsen Design (Minneapolis, MN) |
| Launch Dynamic Media (Reading, PA) |
| Lightborne (Cincinnati, OH) |
| Little Jacket (Cleveland, OH. Fort Collins, CO.) |
| Liquid Inc. (Denver, CO) |
| Lodge Design Co. (Indianapolis, IN) |
| lowercase inc. (Chicago, IL) |
| Lucky Bunny ( Providence, RI) |
| Lure Design (Orlando, FL) |