| Year | Medal | Brew | Brewery | Location |
|---|---|---|---|---|
| 1996 | Gold | Saint Brigid's Porter | Great Divide Brewing Company | Denver, Colorado |
| Silver | Porter | BridgePort Brewing Company | Portland, Oregon | |
| Bronze | Edmund Fitzgerald | Great Lakes Brewing Company | Cleveland, Ohio | |
| 1998 | Gold | Devou Dark | BrewWorks Restaurant & Pub | Covington, Kentucky |
| Silver | Edmund Fitzgerald | Great Lakes Brewing Company | Cleveland, Ohio | |
| Bronze | Pt. Reyes Porter | Marin Brewing Company | Larkspur, California | |
| 2000 | Gold | Swan Lake Beer Porter | Hyouko Yashiki Nomori Brewery | Agano, Niigata, Japan |
| Silver | Mocha Porter | Rogue Ales | Newport, Oregon | |
| Bronze | Old Leghumper | Thirsty Dog Brewing Company | Paso Robles, California | |
| 2002 | Gold | Old Leghumper | Thirsty Dog Brewing Company | Paso Robles, California |
| Silver | Billy Bowlegs Buffalo Beer | Spanish Springs Brewing Company | The Villages, Florida | |
| Bronze | Summit Great Northern Porter | Summit Brewing Company | St. Paul | |
| 2004 | Gold | Sweet Sanderine Porter | Il Vicino | Colorado Springs, Colorado |
| Silver | Organic Tree Hugger Porter | Laurelwood Pub & Brewery | Portland, Oregon | |
| Bronze | Swan Lake Beer Porter | Hyouko Yashiki Nomori Brewery | Agano, Niigata, Japan | |
| 2006 | Gold | Swan Lake Beer Porter | Hyouko Yashiki Nomori Brewery | Agano, Niigata, Japan |
| Silver | Bear Paw Porter | Grizzly Peak Brewing Company | Ann Arbor, Michigan | |
| Bronze | Peg Leg | Flathead Lake Brewing Company | Bigfork, Montana | |
| 2008 | Gold | People's Porter | Foothills Brewing | Winston-Salem, North Carolina |
| Silver | Porter | Nøgne Ø | Grimstad, Norway | |
| Bronze | Swan Lake Beer Porter | Hyokoyashikinomori Brewery Tentyokaku Company | Agano, Niigata, Japan |